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AbstractFalls among older adults (aged 65 years and older) are a public health concern in Canada. Fall-related injuries can cause a reduction in quality of life among older adults, and death. They also entail substantial health care costs. It is essential to monitor fallrelated injuries and deaths among older adults to better understand temporal trends and characteristics and to evaluate fall prevention strategies. We used the most up-to-date data from the Canadian Vital Statistics–Death database, Discharge Abstract Database and National Ambulatory Care Reporting System to analyze the temporal trends of fallrelated mortality, hospitalizations and emergency department (ED) visits among older adults in Canada over more than a decade. Age and sex characteristics were also examined. In 2022, 7189 older adults died due to a fall in Canada (excluding Yukon). From 2010 to 2022, deaths due to falls generally increased in both number and rates. In fiscal year 2023/24, there were 81 599 fall-related hospitalizations in Canada (excluding Quebec) and 212 570 fall-related ED visits in Ontario and Alberta. From fiscal year 2010/11 to 2023/24, even though the overall trend of the rates of fall-related hospitalizations and ED visits did not increase, the numbers generally rose year by year except in 2020/21, the early stage of the COVID-19 pandemic. As for the age and sex characteristics, the rates for deaths, hospitalizations and ED visits rose with advancing age for both men and women. With the aging population, continuous monitoring of the trends is crucial for fall prevention.

RésuméLes chutes chez les aînés (65 ans et plus) constituent un problème de santé publique au Canada. Les blessures liées aux chutes sont susceptibles d’entraîner une réduction de la qualité de vie chez les aînés ou de causer la mort. Elles entraînent également des coûts importants en matière de soins de santé. Il est essentiel de réaliser un suivi des blessures et des décès liés aux chutes chez les aînés afin de mieux en comprendre les tendances temporelles et les caractéristiques et d’évaluer les stratégies de prévention des chutes. Nous avons utilisé les plus récentes données de la Base canadienne de données de l’état civil – Décès, de la Base de données sur les congés des patients et du Système national d’information sur les soins ambulatoires pour analyser les tendances des décès, des hospitalisations et des visites à l’urgence liées aux chutes chez les aînés au Canada sur plus de dix ans. Nous avons également effectué une analyse en fonction de l’âge et du sexe. En 2022, dans l’ensemble du Canada (à l’exception du Yukon), 7 189 aînés sont décédés en raison d’une chute. Entre 2010 et 2022, de manière générale, le nombre et le taux de décès attribuables aux chutes ont augmenté. Au cours de l’exercice 2023-2024, il y a eu 81 599 hospitalisations liées aux chutes dans l’ensemble du Canada (à l’exception du Québec) et 212 570 visites à l’urgence liées aux chutes en Ontario et en Alberta. Entre 2010-2011 et 2023-2024, si la tendance générale des taux d’hospitalisation et de visite à l’urgence liées aux chutes n’a pas augmenté, leur nombre a généralement augmenté d’une année sur l’autre, sauf en 2020-2021, soit au début de la pandémie de COVID-19. En ce qui a trait à l’âge et au sexe, les taux de décès, d’hospitalisation et de visite à l’urgence ont augmenté avec l’âge à la fois chez les hommes et chez les femmes. Compte tenu du vieillissement de la population, la surveillance continue des tendances est essentielle pour la prévention des chutes.

Abstract Background Socio-economic status is associated with self-harm at the individual and area level. In Canada, there is limited evidence on the relationship between area-level markers of socio-economic status and self-harm. The objective of this study was to assess the impact of small area-level material and social deprivation on rates of hospitalization due to self-harm. Methods Administrative data on hospitalizations from two databases in Canada (Discharge Abstract Database and Ontario Mental Health Reporting System) for the period April 1, 2015 to March 31, 2022, were analyzed. Rates of self-harm hospitalization and percentage of repeated admissions were estimated across quintiles of material and social deprivation. Rate ratios were computed to evaluate disparities. The rates were stratified by sex and age group; the percentage of repeated admissions were stratified by sex. Results In total, the study included 109,398 hospitalizations due to self-harm. Populations in more deprived areas had higher rates of self-harm hospitalizations than those in less deprived areas. The rate ratios for people who lived in the most deprived areas over the least deprived areas were 1.48 (95% CI: 1.38–1.58) and 1.71 (95% CI: 1.60–1.82) for material and social deprivation, separately. The largest disparity was among people aged 25–44 years for material and 45–64 years for social deprivation. Percentages of repeated self-harm hospitalizations were significantly higher in more deprived areas compared to less deprived areas for social deprivation, and among males but not females for material deprivation. Conclusions Both material and social deprivation were associated with self-harm hospitalization and repeated admissions; the disparity varied by subgroup and the deprivation components. This study demonstrated a need to consider interventions at the neighbourhood level and address both community and population-level conditions of social and material need.

Abstract Background The opioid crisis is a serious public health issue in Canada. There have been many surveillance programs and research studies on opioid-related emergency department (ED) visits at a national, provincial, regional or municipal level. However, no published studies have investigated the in-depth contexts surrounding opioid-related ED visits. In addition, few studies have examined injuries other than poisonings in those visits. The objective of this study is to investigate the contextual factors and co-occurrence of poisonings and injuries among the opioid-related ED visits in a Canadian sentinel surveillance system on injuries and poisonings from 2011 to 2022. Methods This study used a mixed methods design. The data source was the Canadian Hospitals Injury Reporting and Prevention Program. We first selected all opioid-related ED visits during our study period and then identified the contextual factors through a content analysis of the combination of the narrative description and other variables in the patients’ records. The contextual factors were organized into themes as opioid use context, social resource utilization, bystander involvement, and prior naloxone use. The opioid use context was used as a co-variable to examine the other themes and ED presentations (poisonings and other injuries). Quantitative descriptive approach was used to analyze all the contexts and ED presentations. Results The most common opioid use context was non-prescribed opioid use without intention to cause harm, followed by self-poisoning, children’s exposure, and medication error. Various rare contexts occurred. Paramedics participated in 27.9% of visits. Police and security guards were involved in 5.1% and 2.3% of visits, respectively. Child welfare or social workers were involved in 0.4% of visits. Bystanders initiated 18.9% of the ED visits. Naloxone use before arriving at the ED occurred in 23.4% of the visits with a variety of administrators. The majority of patients presented with poisoning effects, either with poisoning effects only or with other injuries or conditions. Conclusions Our study has provided an in-depth analysis of contextual factors and co-occurrence of poisonings and injuries among opioid-related ED visits in Canada. This information is important for ED programming and opioid-related poisoning and injury intervention and prevention.

Abstract Background Eating disorders (EDs) are severe mental illnesses associated with significant morbidity and mortality. EDs are more prevalent among females and adolescents. Limited research has investigated Canadian trends of ED hospitalizations prior to the COVID-19 pandemic, however during the pandemic, rates of ED hospitalizations have increased. This study examined rates of ED hospitalizations among children and youth in Canada from 2010 to 2022, by sex, age, province/territory, length of stay, discharge disposition and ED diagnosis. Methods Cases of ED hospitalizations among children and youth, ages 5 to 17 years, were identified using available ICD-10 codes in the Discharge Abstract Database from the 2010/11 to 2022/23 fiscal years. The EDs examined in this study were anorexia nervosa (F50.0), atypical anorexia nervosa (F50.1), bulimia nervosa (F50.2), other EDs (F50.3, F50.8) and unspecified EDs (F50.9). Both cases of total and first-time ED hospitalizations were examined. Descriptive statistics and trend analyses were performed. Results Between 2010/11 and 2022/23, 18,740 children and youth were hospitalized for an ED, 65.9% of which were first-time hospitalizations. The most frequent diagnosis was anorexia nervosa (51.3%). Females had significantly higher rates of ED hospitalization compared to males (66.7/100,000 vs. 5.9/100,000). Youth had significantly higher rates compared to children. The average age of ED hospitalization was 14.7 years. Rates of ED hospitalizations were relatively stable pre-pandemic, however during the pandemic (2020–2021), rates increased. Interpretation Rates of pediatric ED hospitalizations in Canada increased significantly during the pandemic, suggesting that there may have been limited access to alternative care for EDs or that ED cases became more severe and required hospitalization. This emphasizes the need for continued surveillance to monitor how rates of ED hospitalizations evolve post-pandemic.

BackgroundInjuries are among the leading causes for hospitalizations and emergency department (ED) visits. COVID-19 restrictions ensured safety to Canadians, but also negatively impacted health outcomes, including increasing rates of certain injuries. These differences in trends have been reported internationally however the evidence is scattered and needs to be better understood to identify opportunities for public education and to prepare for future outbreaks.ObjectiveA scoping review was conducted to synthesize evidence regarding the impact of COVID-19 restrictions on unintentional injuries in Canada, compared to other countries.MethodsStudies investigating unintentional injuries among all ages during COVID-19 from any country, published in English between December 2019 and July 2021, were included. Intentional injuries and/or previous pandemics were excluded. Four databases were searched (MEDLINE, Embase, Web of Science, SPORTDiscus), and a gray literature search was also conducted.ResultsThe search yielded 3,041 results, and 189 articles were selected for extraction. A total of 41 reports were included from the gray literature search. Final studies included research from: Europe (n = 85); North America (n = 44); Asia (n = 32); Oceania (n = 12); Africa (n = 8); South America (n = 4); and multi-country (n = 4). Most studies reported higher occurrence of injuries/trauma among males, and the average age across studies was 46 years. The following mechanisms of injury were reported on most frequently: motor vehicle collisions (MVCs; n = 134), falls (n = 104), sports/recreation (n = 65), non-motorized vehicle (n = 31), and occupational (n = 24). Injuries occurring at home (e.g., gardening, home improvement projects) increased, and injuries occurring at schools, workplaces, and public spaces decreased. Overall, decreases were observed in occupational injuries and those resulting from sport/recreation, pedestrian-related, and crush/trap incidents. Decreases were also seen in MVCs and burns, however the severity of injury from these causes increased during the pandemic period. Increases were observed in poisonings, non-motorized vehicle collisions, lacerations, drownings, trampoline injuries; and, foreign body ingestions.ImplicationsFindings from this review can inform interventions and policies to identify gaps in public education, promote safety within the home, and decrease the negative impact of future stay-at-home measures on unintentional injury among Canadians and populations worldwide.

Abstract Background Cannabis poisonings among children are of public health concern. Existing evidence from the US and from four provinces in Canada (Quebec, Ontario, Alberta, British Columbia) indicate an increase in pediatric cannabis-related poisonings since the legalization of cannabis. This study evaluates trends in cannabis-related poisoning pediatric emergency department (ED) visits and hospitalizations in Canada and addresses a gap in literature by describing trends and context around cannabis edible-related poisoning cases using data from a Canadian sentinel surveillance system. Methods Mixed-methods using data from two administrative data sources and one injury/poisoning sentinel surveillance system to estimate age-specific rates of cannabis-related poisonings ED visits (Ontario and Alberta), edible-related events (sentinel surveillance Canada), and hospitalizations (Canada with the exception of Quebec) among children between the ages of 0 to 11 from 2015/2016 to 2021. Annual absolute changes were calculated to quantify the magnitude of change between each age-specific rate. Joinpoint regression was used for trend analysis. A thematic analysis was completed to gain a better understanding of cannabis edible-related poisoning cases in the ED. Results The pediatric age-specific rates for cannabis-related poisoning ED visits (average annual percent change (AAPC) Ontario: 98.2%, 95% CI: 79.1, 119.2; AAPC Alberta: 57.4%, 95% CI: 36.7, 81.2), hospitalizations (AAPC: 63.4%, 95% CI: 42.0, 87.9) and cannabis edible-related events (AAPC: 122.8%, 95% CI: 64.0, 202.6) increased significantly from 2015 to 2021. Almost half of all pediatric edible-related events involved gummy edible products (48.8%, n = 143). Based on the thematic analysis, 88% cannabis edible-related events were attributed to inadvertent ingestion due to access to such products or lack of safe storage practices. Conclusion Age-specific rates of cannabis-related poisoning ED visits (Ontario and Alberta) and hospitalizations (Canada with the exception of Quebec) have increased since cannabis legalization, with the largest increase in rates occurring from 2019 to 2020. A similar increase in the rate of cannabis edible-related cases from sentinel surveillance data underscores the importance of monitoring this outcome. Public health messaging and national public health promotion strategies targeted towards raising awareness on the risks associated with consuming illegal cannabis and safe storage of cannabis could help mitigate cannabis poisonings among children.

Abstract Background Opioid-related emergency department (ED) visits in Canada increased during the COVID-19 pandemic, but how trends in volume and case severity changed from pre-pandemic times through the pandemic is not known. Trends in ED visits related to specific types of opioids also remain unclear. Our objective was to describe pre-pandemic trends and how they changed with the onset of COVID-19 and thereafter. Methods Based on data from the Canadian Hospitals Injury Reporting and Prevention Program, we identified opioid-related ED visits and constructed a time series from March 12, 2018 through March 7, 2021—two pre-COVID periods and one COVID period. We used an interrupted time series (ITS) analysis to examine trends in volume and case severity. We compared medians and means of monthly counts and percentages of severe cases between the periods, by sex, age, and opioid type. Results Before the pandemic, there was an increasing trend in fentanyl-related visits for males, females and 25- to 64-year-olds, and a decreasing trend in heroin-related visits for males and 18- to 64-year-olds. Fentanyl-related visits for 18- to 24-year-olds showed an immediate increase at the start of the pandemic and a decreasing trend during the pandemic. Heroin-related visits for 12- to 17-year-olds had an immediate increase at the start of the pandemic; for 18- to 24-year-olds and 45- to 64-year-olds, the prior decreasing pre-pandemic trend ceased. For pooled opioid-related visits, no significant trend in the percentage of severe cases was observed throughout the entire study period. Conclusion This study shows that an ITS approach in trend analysis is a valuable supplement to comparisons of before and after measures (with or without controlling seasonal effects). The findings provide evidence on how ED presentations for opioid use evolved in Canada from 2018 to 2021. The results can inform policies designed to reduce opioid-related harm in the context of a public health emergency.

Abstract Background Sexual and gender minority populations experience elevated risks for suicidality. This study aimed to assess prevalence and disparities in non-fatal suicidality and potential protective factors related to social support and health care access among sexual and gender minority youth and adults and their heterosexual and cisgender counterparts in Canada. The second objective was to examine changes in the prevalence of suicidal ideation and protective factors during the COVID-19 pandemic. Methods Pooled data from the 2015, 2016 and 2019 Canadian Community Health Surveys were used to estimate pre-pandemic prevalence of suicidal ideation, plans and attempts, and protective factors. The study also estimated changes in the prevalence of recent suicidal ideation and protective factors in fall 2020, compared with the same period pre-pandemic. Results The prevalence of suicidality was higher among the sexual minority populations compared with the heterosexual population, and the prevalence was highest among the bisexual population, regardless of sex or age group. The pre-pandemic prevalence of recent suicidal ideation was 14.0% for the bisexual population, 5.2% for the gay/lesbian population, and 2.4% for the heterosexual population. The prevalence of lifetime suicide attempts was 16.6%, 8.6%, and 2.8% respectively. More than 40% of sexual minority populations aged 15–44 years had lifetime suicidal ideation; 64.3% and 36.5% of the gender minority population had lifetime suicidal ideation and suicide attempts. Sexual and gender minority populations had a lower prevalence of protective factors related to social support and health care access. The prevalence of recent suicidal ideation among sexual and gender minority populations increased in fall 2020, and they tended to experience longer wait times for immediate care needed. Conclusions Sexual and gender minority populations had a higher prevalence of suicidality and less social support and health care access compared to the heterosexual and cisgender populations. The pandemic was associated with increased suicidal ideation and limited access to care for these groups. Public health interventions that target modifiable protective factors may help decrease suicidality and reduce health disparities.

ABSTRACT: Introduction: Antibiotic resistance is a global health crisis. Ensuring responsible, appropriate use (stewardship) is an important for keeping antibiotics working as long as possible. Around 10% of antibiotics across health care are prescribed by oral health care professionals, with high rates of unnecessary use. To maximise the value from research to optimise antibiotic use in dentistry, this study developed international consensus on a core outcome set for dental antibiotic stewardship. Methods: Candidate outcomes were sourced from a literature review. International participants were recruited via professional bodies, patient organisations, and social media, with at least 30 dentists, academics, and patient contributors in total. Outcomes scored “critical for inclusion” by >70% of the participants (dentists, academics, and patients) after 2 Delphi rounds were included in the core outcome set following a final consensus meeting. The study protocol was registered with the COMET Initiative and published in BMC Trials. Results: A total of 33 participants from 15 countries, including 8 low- and middle-income countries, completed both rounds of the Delphi study. Antibiotic use outcomes (eg, appropriateness of prescribing), adverse or poor outcomes (eg, complications from disease progression), and a patient-reported outcome were included in the final, agreed core set. Outcomes relating to quality, time, and cost were not included. Conclusions: This core outcome set for dental antibiotic stewardship represents the minimum which future studies of antibiotic stewardship in dentistry should report. By supporting researchers to design and report their studies in a way meaningful to multiple stakeholders and enabling international comparisons, the oral health profession's contribution to global efforts to tackle antibiotic resistance can be further improved.

Using data from the 2020 and 2021 cycles of the Survey on COVID-19 and Mental Health, we examined suicidal ideation among adults in Canada aged 18 to 34 years. The prevalence of suicidal ideation among adults aged 18 to 34 years was 4.2% in fall 2020 and 8.0% in spring 2021. The subgroup of adults aged 18 to 24 years had the highest prevalence of suicidal ideation, 10.7%, in spring 2021. Prevalence varied by sociodemographic characteristics and tended to be higher among people living in materially deprived areas. Suicidal ideation was strongly associated with pandemic-related stressors respondents experienced.

Nous avons utilisé les données des cycles de 2020 et de 2021 de l’Enquête sur la COVID-19 et la santé mentale pour étudier les idées suicidaires chez les adultes de 18 à 34 ans au Canada. La prévalence des idées suicidaires chez les adultes de 18 à 34 ans était de 4,2 % à l’automne 2020 et de 8,0 % au printemps 2021. C’est le sous-groupe des adultes de 18 à 24 ans qui a connu la prévalence la plus élevée, avec 10,7 % au printemps 2021. La prévalence variait en fonction des caractéristiques sociodémographiques et tendait à être plus élevée chez les personnes vivant dans un milieu défavorisé sur le plan matériel. Les idées suicidaires se sont révélées fortement associées aux facteurs de stress liés à la pandémie subis par les répondants.

IntroductionInjuries continue to be a leading cause of death and contribute significantly to hospitalizations each year in Canada. Substance use has been associated with an increase in intentional and unintentional injuries, resulting in hospitalizations. This study examines trends in injury hospitalizations with a co-occurring substance diagnosis, to quantify the burden of injuries and identify at risk populations. MethodsWe analyzed Discharge Abstract Database data between 2010/11 and 2020/21, for clinical and demographic information about hospital discharges across Canada. We used ICD-10 codes to identify injury hospitalizations with co-occurring substance diagnostic codes, by injury intent and substance type. Rates, proportions, age-specific rates and age-standardized rates were calculated, trends quantified using average annual percent change and results stratified by sex and age group. ResultsFrom 2010/11 to 2020/21, unintentional injuries accounted for over half of all substance-related injury hospitalizations. Substance-related injuries accounted for 12% of total injury hospitalizations over this period. Overall, substance-related injury hospitalizations with co-occurring use of stimulants, opioids, cannabinoids and alcohol increased significantly among males and females. Unintentional substance-related, injury hospitalizations were more common later in life, and intentional substancerelated injuries were more common among adolescents and young adults. ConclusionThese results highlight key demographic groups with higher rates of substance-related injury hospitalizations that would benefit from targeted prevention efforts.

IntroductionLes blessures demeurent l’une des principales causes de décès et contribuent de manière significative aux hospitalisations chaque année au Canada. La consommation de substances a été associée à une augmentation des blessures intentionnelles et non intentionnelles, conduisant à des hospitalisations. Cette étude analyse les tendances concernant les hospitalisations pour blessures avec diagnostic concomitant de consommation de substances afin de quantifier le fardeau des blessures et de cerner les populations à risque. MéthodologieNous avons analysé les données de la Base de données sur les congés des patients entre 2010-2011 et 2020-2021 pour obtenir des renseignements cliniques et démographiques sur les congés d’hôpital au Canada. Nous avons utilisé les codes de la CIM-10 afin de repérer les hospitalisations pour blessures associées à un code de diagnostic concomitant de consommation de substances, en fonction de l’intentionnalité de la blessure et du type de substance. Nous avons calculé les taux, proportions, taux par âge et taux standardisés pour l’âge, nous avons quantifié les tendances au moyen de la variation annuelle moyenne en pourcentage et nous avons ventilé les résultats par sexe et par groupe d’âge. RésultatsEntre 2010-2011 et 2020-2021, les blessures non intentionnelles ont été en cause dans plus de la moitié des hospitalisations pour blessures associées à une consommation de substances. Les blessures associées à une consommation de substances ont été responsables de 12 % du nombre total d’hospitalisations pour blessures au cours de cette période. Dans l’ensemble, les hospitalisations pour blessures associées à une consommation concomitante de stimulants, d’opioïdes, de cannabinoïdes et d’alcool ont augmenté considérablement chez les hommes et chez les femmes. Les hospitalisations pour blessures non intentionnelles associées à une consommation de substances ont été plus fréquentes plus tard dans la vie, tandis que les hospitalisations pour blessures intentionnelles associées à une consommation de substances ont été plus fréquentes chez les adolescents et les jeunes adultes. ConclusionCes résultats font ressortir les principaux groupes démographiques affichant des taux élevés d’hospitalisations pour blessures associées à une consommation de substances qui bénéficieraient d’efforts de prévention ciblés.

IntroductionRecent evidence has suggested that there has been an increase in suicidal ideation during the COVID-19 pandemic. Our objectives were to estimate the likelihood of suicidal ideation among adults in Canada who experienced pandemic-related impacts and to determine if this likelihood changed during the pandemic. MethodsWe analyzed pooled data for 18 936 adults 18 years or older from two cycles of the Survey on COVID-19 and Mental Health collected from 11 September to 4 December 2020 and from 1 February to 7 May 2021. We estimated the prevalence of suicidal ideation since the pandemic began and conducted logistic regression to evaluate the likelihood of suicidal ideation by adults who experienced pandemic-related impacts, and by factors related to social risk, mental health status, positive mental health indicators and coping strategies. ResultsAdults who had adverse pandemic-related experiences were significantly more likely to experience suicidal ideation; a dose–response relationship was evident. People who increased their alcohol or cannabis use, expressed concerns about violence in their home or who had moderate to severe symptoms of depression, anxiety or posttraumatic stress disorder also had significantly higher risk of suicidal ideation. The risk was significantly lower among people who reported high self-rated mental health, community belonging or life satisfaction, who exercised for their mental and/or physical health or who pursued hobbies. ConclusionThe COVID-19 pandemic has influenced suicidal ideation in Canada. Our study provides evidence for targeted public health interventions related to suicide prevention.

IntroductionD’après de récentes données probantes, il y aurait eu une augmentation des idées suicidaires au cours de la pandémie de COVID-19. Notre recherche visait à estimer la probabilité de la présence d’idées suicidaires chez les adultes du Canada ayant subi des répercussions de la pandémie et à caractériser l’évolution de cette probabilité tout au long de la pandémie. MéthodologieNous avons analysé les données regroupées issues des deux cycles de l’Enquête sur la COVID-19 et la santé mentale, à laquelle ont participé 18 936 adultes de 18 ans et plus, qui ont répondu aux questions du 11 septembre au 4 décembre 2020 puis du 1er février au 7 mai 2021. Nous avons estimé la prévalence des idées suicidaires depuis le début de la pandémie puis nous avons évalué, par régression logistique, la probabilité d’idées suicidaires chez les adultes ayant subi des répercussions de la pandémie, en fonction de facteurs de risque sociaux, de l’état mental général, d’indicateurs de bonne santé mentale et des stratégies d’adaptation. RésultatsLes adultes ayant eu des expériences négatives liées à la pandémie présentaient un risque significativement plus élevé d’avoir des idées suicidaires, avec une relation dose-réponse manifeste. Les personnes ayant augmenté leur consommation d’alcool ou de cannabis, se disant inquiètes de la violence à la maison ou présentant des symptômes modérés à graves de dépression, d’anxiété ou de trouble stress post-traumatique avaient également un risque significativement plus élevé d’idées suicidaires. Le risque était significativement plus faible chez les personnes se percevant comme ayant une bonne santé mentale ou ayant fait état d’un fort sentiment d’appartenance à leur communauté ou d’une grande satisfaction à l’égard de la vie, qui faisaient de l’exercice pour se maintenir en bonne santé mentale ou physique ou qui s’adonnaient régulièrement à un passe-temps. ConclusionLa pandémie de COVID-19 a une influence sur les idées suicidaires au Canada. Les données probantes de notre étude pourront servir à mettre au point des interventions sanitaires ciblées en vue de la prévention du suicide.

This work provides an overview of injury patterns in Canadian children and youth aged 1 to 17 years. Self-reported data from the 2019 Canadian Health Survey on Children and Youth were used to calculate estimates for the percentage of Canadian children and youth who experienced a head injury or concussion, broken bone or fracture, or serious cut or puncture within the last 12 months, overall and by sex and age group. Head injuries and concussions (4.0%) were the most commonly reported, but the least likely to be seen by a medical professional. Injuries most frequently occurred while engaging in sports, physical activity or playing.

Cet article fournit un aperçu des profils de blessures subies par les enfants et les jeunes canadiens de 1 à 17 ans. Les données autodéclarées tirées de l’Enquête canadienne sur la santé des enfants et des jeunes (ECSEJ) de 2019 ont servi à calculer les estimations du pourcentage d’enfants et de jeunes canadiens qui ont subi un traumatisme crânien ou une commotion cérébrale, une fracture ou une fêlure ou encore une coupure ou une perforation grave au cours des 12 derniers mois, en général et selon le sexe et le groupe d’âge. Les traumatismes crâniens et les commotions cérébrales (4,0 %) sont les blessures les plus fréquemment déclarées, mais les moins susceptibles d’être évaluées par un professionnel de la santé. Les blessures ont lieu le plus souvent lors de la pratique d’un sport, d’une activité physique ou d’un jeu.

Abstract Background Firearms are a substantial cause of injury-related morbidity and mortality in Canada and globally, though evidence from contexts other than the USA is relatively limited. We examined deaths, hospitalizations and emergency department (ED) visits due to firearm-related injuries in Canada to identify population groups at increased risk of fatal and non-fatal outcomes. Methods We conducted a population-based study using three national administrative databases on deaths, hospitalizations, and ED visits. ICD-10 codes were used to identify firearm-related injuries from January 1, 2016, through December 31, 2020. Fatal and non-fatal firearm injuries were classified as suicide/self-harm, homicide/assault, unintentional, undetermined or legal intervention injuries. We analyzed the data with counts, rates and proportions, stratified by sex, age group, province/territory, and year. Results Over the 5-year period, we identified 4005 deaths, 3169 hospitalizations, and 2847 ED visits related to firearm injuries in various jurisdictions in Canada. Males comprised the majority of fatal and non-fatal injury cases. The highest rates of fatal and non-fatal firearm injuries were among 20- to 34-year-olds. The leading cause of fatal firearm injuries was self-harm (72.3%). For non-fatal firearm hospitalizations and ED visits, assault (48.8%) and unintentional injuries (62.8%) were the leading causes of injury. Rates varied by province and territory. Conclusions Our results showed that males comprised the majority of fatal and non-fatal firearm injuries in Canada. The rates of both fatal and non-fatal firearm injuries were highest among the 20- to 34-year-old age group. This comprehensive overview of the epidemiology of firearm injuries in Canada provides baseline data for ongoing surveillance and policy evaluation related to public health interventions.

Chronic inflammatory demyelinating polyradiculoneuropathy (CIDP) is a chronic relapsing disease of unknown aetiology. The diagnosis of this disease is still very complicated. The treatment is medical but, in some cases, a surgical decompression might be required. In rare cases it develops a radicular hypertrophy that can cause a cervical myelopathy; this pathology should be put in differential diagnosis with neurofibromatosis 1 and Charcot-Marie-Tooth (CMT) syndromes. The cases of CIDP cervical myelopathy reported in the literature are rare and even more rarely a surgical decompression was described. Here we report a first and unique case of CIDP cervical myelopathy treated with an open-door laminoplasty technique with 10-year postoperative follow-up (FU). The surgical decompression revealed to be effective in stopping the progression of myelopathy without destabilizing the spine. The patient that before surgery presented a severe tetraparesis could return to walk and gain back his self-care autonomy. At 10-year FU he did not complain of neck pain and did not develop a cervical kyphosis. In case of cervical myelopathy caused by radicular hypertrophy, CIDP should be kept in mind in the differential diagnosis and an open-door laminoplasty is indicated to stop myelopathy progression.

Abstract Background Antimicrobial resistance is both a global public health and patient safety problem driven by overprescribing of antibiotic and other antimicrobial drugs. To conserve the effectiveness of antibiotics for future generations, antibiotic stewardship approaches to using them only where appropriate and necessary are advocated. Dentistry accounts for about 10% of antibiotic prescriptions across global healthcare, with 80% not in accordance with guidance in some countries. Core outcome sets enable the results of studies to be compared in order to maximise the value which can be derived from them. The aim of this study is to develop an international consensus on a core outcome set for dental antibiotic stewardship. Methods Consensus on outcomes which are critical for inclusion in the core outcome set for dental antibiotic stewardship will be sought through two rounds of a Delphi survey (using the DelphiManager online system) followed by a final online consensus meeting. Thirty participants will be recruited to the Delphi Panel from across three stakeholder groups: ten dentists, ten academics and ten adults experienced with dental antibiotics as either a patient or parent/carer of a patient who has been prescribed them. Consensus will be achieved if more than 70% of the panel agree that an outcome is critical, with at least one from each stakeholder group in agreement. A long-list of candidate core outcomes has been developed from previously published studies with additions recommended by the steering group. The steering group will oversee development of the core outcome set and includes people from around the world with experience of dental antibiotics: clinicians, researchers and people with experience of being prescribed dental antibiotics and/or surviving an antibiotic resistant infection. Discussion To date, few studies of dental antibiotic stewardship have been published. Internationally, dental antibiotic guidelines and patterns of use vary widely, so a core outcome set is particularly important to facilitate meaningful comparisons between studies. This core outcome set will encompass antibiotic prescribing for both therapeutic indications, such as for people with acute infections, and for prophylactic indications, such as the prevention of distant site infections (like infective endocarditis) following dental procedures.

IntroductionUnintentional falls are a leading cause of injury-related hospital visits among Canadians, especially seniors. While certain meteorological conditions are suspected risk factors for fall-related injuries, few studies have quantified these associations across a wider range of age groups and with population-based datasets. MethodsWe applied a time-stratified case-crossover study design to characterize associations of highly-spatially-resolved meteorological factors and emergency department (ED) visits for falls, in Ontario, among those aged 5 years and older during the winter months (November to March) between 2011 and 2015. Conditional logistic models were used to estimate the odds ratios (ORs) and their 95% confidence intervals (CIs) for these visits in relation to daily snowfall accumulation, including single-day lags of up to one week before the visit, and daily mean temperature on the day of the visit. Analyses were stratified by age and sex. ResultsWe identified 761 853 fall-related ED visits. The odds for these visits was increased for most days up to a week after a snowfall of 0.2 cm or greater (OR = 1.05–1.08) compared to days with no snowfall. This association was strongest among adults aged 30 to 64 years (OR = 1.16–1.19). The OR for fall-related ED visits on cold days (less than −9.4 °C) was reduced by 0.05 relative to days with an average daily temperature of 3.0 °C or higher (OR = 0.95; 95% CI: 0.94, 0.96), and this pattern was evident across all ages. There were no substantive differences in the strength of this association by sex. ConclusionSnowfall and warmer winter temperatures were associated with an increased risk of fall-related ED visits during Ontario winters. These findings are relevant for developing falls prevention strategies and ensuring timely treatment.

IntroductionLes chutes accidentelles sont l’une des principales causes de visites à l’hôpital liées à des blessures chez les Canadiens, en particulier chez les personnes âgées. Bien qu’on soupçonne certaines conditions météorologiques d’être des facteurs de risque des blessures liées aux chutes, peu d’études ont quantifié ces associations auprès d’un large éventail de groupes d’âge et en utilisant des bases de données populationnelles. MéthodologieNous avons appliqué une méthode d’étude de type cas-croisé stratifié en fonction du temps pour caractériser les associations entre les facteurs météorologiques à haute résolution spatiale et les visites aux services d’urgence en raison de chutes en Ontario, chez les personnes âgées de cinq ans et plus, pendant les mois d’hiver (novembre à mars) pour 2011 à 2015. Des modèles logistiques conditionnels ont été utilisés pour estimer les rapports de cotes (RC) avec intervalles de confiance (IC) à 95 % associés à ces visites en fonction de l’accumulation quotidienne de neige (intégrant les écarts variant entre une journée et une semaine avant la visite) et de la température quotidienne moyenne le jour de la visite. Les analyses ont été stratifiées par âge et par sexe. RésultatsNous avons recensé 761 853 visites aux services d’urgence liées à une chute. La probabilité de survenue de ces visites augmente pour la plupart des jours jusqu’à une semaine après une chute de neige de 0,2 cm ou plus (RC = 1,05 à 1,08) par rapport aux jours sans chute de neige. Cette association s’est révélée la plus forte chez les adultes de 30 à 64 ans (RC = 1,16 à 1,19). Le RC des visites aux services d’urgence liées à une chute lors de journées froides (moins de −9,4°C) a été réduit de 0,05 par rapport aux jours où la température quotidienne moyenne était de 3,0°C ou plus (RC = 0,95; IC à 95 % : 0,94 à 0,96), et cette tendance était valide pour tous les âges. Aucune différence notable dans la force de cette association selon le sexe n’a été relevée. ConclusionLes chutes de neige et les températures hivernales plus chaudes sont associées à un risque accru de visites aux services d’urgence liées à une chute pendant les hivers ontariens. Ces conclusions peuvent servir à élaborer les stratégies de prévention des chutes et à s’assurer d’un traitement rapide.

IntroductionOver the last decade, e-cigarette use has been on the rise but with growing health concerns. The objective of this systematic review was to update findings for chronic health outcomes associated with e-cigarette use from the 2018 National Academies of Sciences, Engineering, and Medicine (NASEM) report.MethodsThree bibliographic databases were searched to identify studies comparing the chronic health effects of e-cigarette users (ECU) to non-smokers (NS), smokers, and/or dual users indexed between 31 August 2017 and 29 January 2021. Two independent reviewers screened abstracts and full texts. Data were extracted by one reviewer and verified by a second one. Outcomes were synthesized in a narrative manner using counts and based on statistical significance and direction of the association stratified by study design and exposure type. Risk of bias and certainty of evidence was assessed. The protocol was prospectively registered on Open Science Framework https://osf.io/u9btp.ResultsA total of 180 articles were eligible. This review focused on 93 studies for the 11 most frequently reported outcomes and from which 59 reported on daily e-cigarette use. The certainty of evidence for all outcomes was very low because of study design (84% cross-sectional) and exposure type (27% reported on exclusive ECU, i.e., never smoked traditional cigarettes). Overall, the summary of results for nearly all outcomes, including inflammation, immune response, periodontal and peri-implant clinical parameters, lung function, respiratory symptoms, and cardiovascular disease, suggested either non-significant or mixed results when daily ECU was compared to NS. This was also observed when comparing exclusive ECU to NS. The only notable exception was related to oral health where most (11/14) studies reported significantly higher inflammation among daily ECU vs. NS. Compared to the smokers, the exclusive-ECUs had no statistically significant differences in inflammation orperiodontal clinical parameters but had mixed findings for peri-implant clinical parameters.ConclusionsThis review provides an update to the 2018 NASEM report on chronic health effects of e-cigarette use. While the number of studies has grown, the certainty of evidence remains very low largely because of cross-sectional designs and lack of reporting on exclusive e-cigarette exposure. There remains a need for higher quality intervention and prospective studies to assess causality, with a focus on exclusive e-cigarette use.

ABSTRACT BACKGROUND AND CONTEXTGlobally, the coronavirus disease 2019 (COVID-19) pandemic has highlighted the need for better interprofessional collaboration and teamwork. When disciplines have worked together to undertake testing, deliver care and administer vaccines, progress against COVID-19 has been made. Yet, teamwork has often not happened, wasting precious resources and stretching health-care workforces. Continuing to train health professionals during the pandemic is challenging, particularly delivering interprofessional education that often uses face-to-face delivery methods to optimise interactional learning. Yet, continuing to offer interprofessional education throughout the pandemic is critical to ensure a collaboration-ready health workforce. One example is continuing the established INVOLVE (Interprofessional Visits to Learn Interprofessional Values through Patient Experience) interprofessional education initiative. ASSESSMENT OF PROBLEMEducators have not always prioritised interprofessional education during the pandemic, despite its immediate and long-term benefits. The INVOLVE interprofessional education initiative, usually delivered face-to-face, was at risk of cancellation. RESULTSA quality improvement analysis of the strategies used to continue INVOLVE demonstrated that it is possible to deliver interprofessional education within the constraints of a pandemic by using innovative online and hybrid educational strategies. Educators and students demonstrated flexibility in responding to the sudden changes in teaching and learning modalities. STRATEGIESWhen pandemic alert levels change, interprofessional educators and administrators can now choose from a repertoire of teaching approaches. LESSONSFour key lessons have improved the performance and resilience of INVOLVE: hold the vision to continue interprofessional education; be nimble; use technology appropriately; and there will be silver linings and unexpected benefits to the changes.

National injury hospitalization statistics are essential for understanding the burden and pattern of injuries. This paper used the Discharge Abstract Database to analyse injury hospitalizations in Canada (excluding Quebec) for fiscal year 2018/19. The results show that unintentional injuries were the eighth leading cause of hospitalization compared to all other diseases and conditions. For unintentional injury-related hospitalizations, in rank order, the leading causes were falls, suffocation, motor vehicle traffic crashes, poisonings, struck by/against, and fire/hot object/smoke. However, the rankings were different across age groups.

Abstract Background Canadians spend the majority of their days sedentary. Gender and education are important social determinants of health that impact health behaviours. There is evidence that gender and educational differences in sedentary behaviour exist. In Canada, while general trends suggest that leisure sedentary activities have changed; there has been no comprehensive assessment examining whether historical changes in sedentary behaviour differ by gender and education level. Our objective was to examine whether gender and educational differences in accelerometer-measured sedentary time and self-reported sedentary behaviours exist among Canadians and if differences are consistent across age groups, over time and across multiple survey sources. Methods We summarize amounts of total accelerometer-measured sedentary time and self-reported sedentary activities (e.g., passive travel, television, computer, video games, screen, reading) by age (i.e. children: 6–11 years, youth: 12–17 years, adults: 18–34 years, 45–49 years, 50–64 years, and older adults: ≥ 65 years), gender (girls/women, boys/men) and household education level (< post-secondary vs. ≥ post-secondary) over time in the Canadian Community Health Survey, Canadian Health Measures Survey, General Social Survey, and the Health Behaviour in School-Aged Children study. Gender and education level differences are examined using independent sample t-tests or chi-square analyses. Results While few differences were found for total accelerometer-measured sedentary time, gender and education differences in self-reported, type-specific sedentary behaviour were identified. Among youth, data from all surveys consistently identified that boys engaged in more video/computer game play (e.g., boys: 0.35–2.68 vs. girls: 0.09–2.15 h/day), while girls engaged in more leisure reading (e.g., boys: 0.45–0.65 vs. girls: 0.71–0.99 h/day). Those with a higher education or household education often reported more leisure reading and passive travel. Education level differences in screen time were often age dependent, with leisure computer use greater in higher education groups in adults only and leisure television watching generally higher in lower education groups in children and adults, but not youth. Conclusions This information is valuable as it helps to identify segments of the population which may be at greater risk for engaging in higher volumes of sedentary behaviour. In turn, this information can identify target audiences and behaviours for policies and interventions. Future work is needed to further understand factors contributing to these differences (e.g., preferences, occupation, family structure).

Information from emergency department (ED) visits for methamphetamine-related injuries and poisonings between 1 April 2011 and 9 August 2019 were captured from 19 sentinel sites across Canada for all ages. Overall, 1093 cases (97.6/100 000 eCHIRPP cases) were identified (59.4% male), with female patients experiencing more poisonings (71% vs 57.4% for males). Unintentional injuries and poisoning accounted for 14.8% of ED presentations. Self-harm (while or as a result of consuming methamphetamine) accounted for 11.4% of cases. The circumstances surrounding injuries and poisonings associated with methamphetamine are varied and include self-harm, fall-related brain injuries, mental illness, criminal activity and other circumstances. These domains should be taken into account when developing mitigation strategies.

Abstract Background Historical changes in the nature of sedentary activities have been observed in other countries, but it is not clear if similar trends exist in Canada. It is also unclear how changes in the measurement of sedentary behaviour affects national estimates. Our objective is to document all sources and measures of sedentary behaviour from Canadian, nationally representative surveys, and report on selected estimates of time spent in sedentary activities. Lessons learned can benefit the wider international surveillance community. Methods We describe and document all data sources of sedentary behaviour at the national level in Canada, and report on selected prevalence data from repeated cross-sectional surveys. We summarize amounts of total device-assessed sedentary time and self-reported sedentary activities (e.g., passive travel, leisure television, computer, video games, screen, and reading) by age group over time. Results Nineteen national surveys were identified. Changes in questions and/or response categories precluded direct assessment of trends over time for some measures; however, certain trends were observed. Accelerometer-measured sedentary time, leisure reading (among those

Les statistiques nationales sur les hospitalisations pour blessure sont essentielles pour comprendre le fardeau et le profil des blessures. Dans cette étude, on a utilisé la Base de données sur les congés des patients afin d’analyser les hospitalisations pour blessure au Canada (à l’exception du Québec) pour l’exercice 2018-2019. Il en ressort que les blessures non intentionnelles occupent le huitième rang des principales causes d’hospitalisation pour l’ensemble des maladies et affections. Dans le cas des hospitalisations pour blessure non intentionnelle, les principales causes sont, dans l’ordre, les chutes, la suffocation, les accidents de la circulation avec un véhicule à moteur, les empoisonnements, l’exposition à des forces mécaniques et l’exposition à la fumée, au feu et aux objets brûlants. Toutefois, ce classement est variable selon le groupe d’âge.

Des données sur les consultations à un service des urgences pour des blessures et des intoxications liées à la méthamphétamine entre le 1er avril 2011 et le 9 août 2019 ont été saisies dans 19 sites sentinelles au Canada pour des patients de tous âges. On a recensé au total 1093 cas (97,6/100000 cas de l’eSCHIRPT) (dont 59,4 % de patients de sexe masculin). La proportion d’intoxications était plus élevée chez les femmes que chez les hommes (71 % contre 57,4 %). Les blessures et les intoxications accidentelles étaient en cause dans 14,8 % des consultations à un service des urgences. Les blessures auto­infligées (durant ou à la suite de la consommation de méthamphétamine) étaient à l’origine de 11,4 % des cas. Les circonstances des blessures et les intoxications associées à la méthamphétamine étaient variées : blessures auto­infligées, traumatismes cérébraux liés aux chutes, maladies mentales, activités criminelles et diverses autres situations. Ces facteurs devraient être pris en compte dans la préparation des stratégies de réduction des méfaits.

BackgroundAdvances in automated data processing and machine learning (ML) models, together with the unprecedented growth in the number of social media users who publicly share and discuss health-related information, have made public health surveillance (PHS) one of the long-lasting social media applications. However, the existing PHS systems feeding on social media data have not been widely deployed in national surveillance systems, which appears to stem from the lack of practitioners and the public’s trust in social media data. More robust and reliable data sets over which supervised ML models can be trained and tested reliably is a significant step toward overcoming this hurdle. The health implications of daily behaviors (physical activity, sedentary behavior, and sleep [PASS]), as an evergreen topic in PHS, are widely studied through traditional data sources such as surveillance surveys and administrative databases, which are often several months out-of-date by the time they are used, costly to collect, and thus limited in quantity and coverage. ObjectiveThe main objective of this study is to present a large-scale, multicountry, longitudinal, and fully labeled data set to enable and support digital PASS surveillance research in PHS. To support high-quality surveillance research using our data set, we have conducted further analysis on the data set to supplement it with additional PHS-related metadata. MethodsWe collected the data of this study from Twitter using the Twitter livestream application programming interface between November 28, 2018, and June 19, 2020. To obtain PASS-related tweets for manual annotation, we iteratively used regular expressions, unsupervised natural language processing, domain-specific ontologies, and linguistic analysis. We used Amazon Mechanical Turk to label the collected data to self-reported PASS categories and implemented a quality control pipeline to monitor and manage the validity of crowd-generated labels. Moreover, we used ML, latent semantic analysis, linguistic analysis, and label inference analysis to validate the different components of the data set. ResultsLPHEADA (Labelled Digital Public Health Dataset) contains 366,405 crowd-generated labels (3 labels per tweet) for 122,135 PASS-related tweets that originated in Australia, Canada, the United Kingdom, or the United States, labeled by 708 unique annotators on Amazon Mechanical Turk. In addition to crowd-generated labels, LPHEADA provides details about the three critical components of any PHS system: place, time, and demographics (ie, gender and age range) associated with each tweet. ConclusionsPublicly available data sets for digital PASS surveillance are usually isolated and only provide labels for small subsets of the data. We believe that the novelty and comprehensiveness of the data set provided in this study will help develop, evaluate, and deploy digital PASS surveillance systems. LPHEADA will be an invaluable resource for both public health researchers and practitioners.

BackgroundCrowdsourcing services, such as Amazon Mechanical Turk (AMT), allow researchers to use the collective intelligence of a wide range of web users for labor-intensive tasks. As the manual verification of the quality of the collected results is difficult because of the large volume of data and the quick turnaround time of the process, many questions remain to be explored regarding the reliability of these resources for developing digital public health systems. ObjectiveThis study aims to explore and evaluate the application of crowdsourcing, generally, and AMT, specifically, for developing digital public health surveillance systems. MethodsWe collected 296,166 crowd-generated labels for 98,722 tweets, labeled by 610 AMT workers, to develop machine learning (ML) models for detecting behaviors related to physical activity, sedentary behavior, and sleep quality among Twitter users. To infer the ground truth labels and explore the quality of these labels, we studied 4 statistical consensus methods that are agnostic of task features and only focus on worker labeling behavior. Moreover, to model the meta-information associated with each labeling task and leverage the potential of context-sensitive data in the truth inference process, we developed 7 ML models, including traditional classifiers (offline and active), a deep learning–based classification model, and a hybrid convolutional neural network model. ResultsAlthough most crowdsourcing-based studies in public health have often equated majority vote with quality, the results of our study using a truth set of 9000 manually labeled tweets showed that consensus-based inference models mask underlying uncertainty in data and overlook the importance of task meta-information. Our evaluations across 3 physical activity, sedentary behavior, and sleep quality data sets showed that truth inference is a context-sensitive process, and none of the methods studied in this paper were consistently superior to others in predicting the truth label. We also found that the performance of the ML models trained on crowd-labeled data was sensitive to the quality of these labels, and poor-quality labels led to incorrect assessment of these models. Finally, we have provided a set of practical recommendations to improve the quality and reliability of crowdsourced data. ConclusionsOur findings indicate the importance of the quality of crowd-generated labels in developing ML models designed for decision-making purposes, such as public health surveillance decisions. A combination of inference models outlined and analyzed in this study could be used to quantitatively measure and improve the quality of crowd-generated labels for training ML models.

In the pre-antibiotic era, deaths from dental infections were common. Dentists are responsible for prescribing around 10% of antibiotics across healthcare globally. During 2020, dental antibiotic prescribing increased dramatically due to COVID-19 pandemic restrictions on dental procedures, which are vital for preventing and managing dental infections. FDI World Dental Federation responded with a framework about the essential role of dental teams in tackling antibiotic resistance, setting out a program to engage the global dental profession. Three exemplars include an open online course (with >2300 learners enrolled from >100 countries), a pledge for national dental organizations, and an early career researcher network.

Abstract Background While physical (in) activity surveillance has grown and continues to grow globally, surveillance of sedentary behaviour is in its infancy. As surveillance evolves to meet the changing nature of these behaviours, there is a need for the development of national health survey questions to provide accurate and consistent measures over time. The development of national health survey content is a complex, detailed and often undocumented process. The objective of this paper is to outline the process that the Public Health Agency of Canada (PHAC) and Statistics Canada took in partnership with academic experts to develop a short, flexible, sedentary behaviour module for the Canadian Health Measures Survey (CHMS) and to provide an approach for the development of future survey content. Methods Development of the module followed a multi-step process. The results of this paper describe this process and present a framework for content development. Results Initially, PHAC and Statistics Canada analysts worked together to identify key content required for a potential survey module. Next, this work was formalized through a contract with academic experts, the scope included a: review of existing Canadian sedentary behaviour modules; literature review linking different sedentary behaviours to health outcomes; and, international scan of modules currently in use in large national health surveys and research. The key output from both review processes was recommendations for a short sedentary behaviour questionnaire module (International Sedentary Assessment Tool). These recommendations provided an evidence-informed basis for discussions about how to revise and update the CHMS sedentary behaviour questionnaire content. Qualitative testing was undertaken and a final module was developed using survey design best practices. Conclusions Content volume in national surveys is limited due to demand to measure core content in addition to emerging health topics while keeping surveys as short as possible. Questions must therefore, be concise, valid/reliable, evidence-based, and developed using best practices. The paper describes the development process of a new survey module addressing the emerging area of sedentary behaviour for use in a national survey that may serve as a model for future population survey content development.

The Public Health Agency of Canada (PHAC) has modernized its approach to physical activity surveillance by broadening its scope to include sedentary behaviour and sleep. The first step was to develop a conceptual framework which covers the full spectrum of physical movement from moderate-to-vigorous intensity physical activity (MVPA) and light intensity physical activity (LPA) to sedentary behaviour and sleep. The framework accounts for the environments in which these behaviours take place (home, work/school, transportation, and community), and applies a socioecological approach to incorporate individual factors and broader built, social, and societal environmental indicators. A visual model of the conceptual framework was created to aid dissemination.

Introduction: Geographical positioning systems (GPS) have the capacity to provide further context around where physical activity (PA) and sedentary time (ST) are accrued especially when overlaid onto objectively measured movement. The objective of this rapid review was to summarize evidence from location-based studies which employed the simultaneous use of GPS and objective measures of PA and/or ST. Methods: Six databases were searched to identify studies that employed the simultaneous use of GPS and objective measures of PA or ST to quantify location of movement. Risk of bias was assessed, and a qualitative synthesis completed. Results: Searching identified 3446 articles; 59 were included in the review. A total of 22 studies in children, 17 in youth and 20 in adults were captured. The active transportation environment emerged as an important location for moderate-to-vigorous intensity physical activity (MVPA) in children, youth and adults. In children and youth, the school is an important location for MVPA, especially the schoolyard for children. Indoor locations (e.g., schools, homes) appear to be greater sources of lighter intensities of PA and ST. The review was limited by a lack of standardization in the nomenclature used to describe the locations and methods, as well as measures of variance. Conclusion: Evidence suggests that the active transportation environment is a potentially important contributor of MVPA across an individual’s lifespan. There is a need for future location-based studies to report on locations of all intensity of movement (including minutes and proportion) using a whole-day approach in larger representative samples.

L’Agence de la santé publique du Canada a modernisé son approche en matière de sur¬veillance de l’activité physique en élargissant la portée de cette dernière de façon à englober le comportement sédentaire et le sommeil. La première étape a consisté à éla¬borer un cadre conceptuel couvrant toute la gamme de l’activité : activité physique d’intensité modérée à élevée, activité physique de faible intensité, comportement séden¬taire et sommeil. Ce cadre tient compte de l’environnement dans lequel ces comporte¬ments surviennent (à la maison, au travail ou à l’école, durant le transport entre différents lieux, et dans la communauté) et adopte une approche socioécologique intégrant les facteurs individuels et les indicateurs portant, plus largement, sur les milieux bâti, social et sociétal. Nous avons également conçu un modèle visuel de ce cadre conceptuel pour en faciliter la diffusion.

Introduction. Les systèmes de géolocalisation par satellite (GPS) peuvent fournir un contexte supplémentaire sur les lieux où l’activité physique (AP) et les activités sédentaires (AS) sont pratiquées, surtout lorsque les données GPS sont superposées à celles de la mesure objective du mouvement. L’objectif de cet examen rapide était de résumer les données probantes tirées d’études spatialisées faisant appel à l’utilisation simultanée de GPS et de mesures objectives de l’AP et de l’AS. Méthododologie. Six bases de données ont été consultées afin de recenser les études qui faisaient appel pour quantifier la localisation du mouvement à l’utilisation simultanée de GPS et de mesures objectives de l’AP ou de l’AS. Le risque de biais a été évalué et une synthèse qualitative a été effectuée. Résultats. La recherche a permis de recenser 3 446 articles, dont 59 ont été inclus dans la revue, soit 22 études portant sur les enfants, 17 sur les adolescents et 20 sur les adultes. Un environnement favorable au transport actif est apparu comme un facteur important contribuant à l’activité physique d’intensité modérée à vigoureuse (APMV) chez les enfants, les adolescents et les adultes. Chez les enfants et les adolescents, l’école constitue un lieu important pour la pratique d’APMV, plus particulièrement la cour d’école dans le cas des enfants. Les lieux intérieurs (p. ex. les écoles et le domicile) semblent favoriser davantage la pratique d’AP légère et les AS. L’examen a été limité par le manque de normalisation de la nomenclature utilisée pour décrire les lieux et les méthodes ainsi que les mesures des écarts. Conclusion. D’après les données probantes, un environnement favorable au transport actif contribuerait de façon importante à l’APMV tout au long de la vie d’une personne. Nous avons besoin d’études spatialisées fournissant la localisation de toutes les intensités de mouvement (avec le nombre de minutes et la proportion de chaque intensité), portant sur l’ensemble de la journée et utilisant des échantillons représentatifs de plus large taille.

Injuries continue to be a public health concern in Canada. National injury death data are essential for understanding the magnitude and pattern of injuries. This paper used the Vital Statistics - Death database to examine deaths associated with injuries in 2015. Injuries were ranked against causes of death, and more in-depth analysis of injury categories was conducted by sex and age. Unintentional injuries were the 6th leading causes of death overall, with different ranking by sex. Among unintentional injury deaths, leading causes included falls, poisonings, motor vehicle traffic collisions, and suffocation, which varied by age group.

Les blessures demeurent un sujet de préoccupation pour la santé publique au Canada. Disposer de données nationales sur les décès attribuables à des blessures est indispensable pour comprendre l’importance et le profil des blessures. Nous avons utilisé pour cet article la base de données sur les décès des statistiques de l’état civil pour examiner les décès associés aux blessures en 2015. Nous avons réparti les blessures par cause de décès et nous avons effectué une analyse plus approfondie par catégorie de blessure en fonction du sexe et de l’âge. Les blessures non intentionnelles étaient à la sixième place des causes de décès en général, ce classement variant selon le sexe. Les principales causes de décès attribuables à des blessures non intentionnelles étaient les chutes, les empoisonnements, les accidents de la route et la suffocation, avec des variations selon les groupes d’âge.

Background: Antimicrobial resistance is a global problem driven by the overuse of antibiotics. Dentists are responsible for about 10% of antibiotics usage across healthcare worldwide. Factors influencing dental antibiotic prescribing are numerous, with some differences in low- and middle-income countries compared with high-income countries. This study aimed to explore the antibiotic prescribing behaviour and knowledge of teams treating dental patients in two Ghanaian hospitals. Methods: Qualitative interviews were undertaken with dentists, pharmacists, and other healthcare team members at two hospitals in urban and rural locations. Thematic and behaviour analyses using the Actor, Action, Context, Target, Time framework were undertaken. Results: Knowledge about ‘antimicrobial resistance and antibiotic stewardship’ and ‘people and places’ were identified themes. Influences on dental prescribing decisions related to the organisational context (such as the hierarchical influence of colleagues and availability of specific antibiotics in the hospital setting), clinical issues (such as therapeutic versus prophylactic indications and availability of sterile dental instruments), and patient issues such as hygiene in the home environment, delays in seeking professional help, ability to access antibiotics in the community without a prescription and patient’s ability to pay for the complete prescription. Conclusions: This work provides new evidence on behavioural factors influencing dental antibiotic prescribing, including resource constraints which affect the availability of certain antibiotics and diagnostic tests. Further research is required to fully understand their influence and inform the development of new approaches to optimising antibiotic use by dentists in Ghana and potentially other low- and middle-income countries.