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Background Compared with those with a higher socio-economic position (SEP), individuals with a lower SEP have higher cancer morbidity and mortality. However, the contribution of modifiable risk factors to these inequities is not known. This study aimed to quantify the mediating effects of modifiable risk factors to associations between SEP and cancer morbidity and mortality. Methods This study used a prospective observational cohort design. We combined eight cycles of the Canadian Community Health Survey (2000/2001–2011) as baseline data to identify a cohort of adults (≥35 years) without cancer at the time of survey administration (n = 309 800). The cohort was linked to the Discharge Abstract Database and the Canadian Mortality Database for cancer morbidity and mortality ascertainment. Individuals were followed from the date they completed the Canadian Community Health Survey until 31 March 2013. Dates of individual first hospitalizations for cancer and deaths due to cancer were captured during this time period. SEP was operationalized using a latent variable combining measures of education and household income. Self-reported modifiable risk factors, including smoking, excess alcohol consumption, low fruit-and-vegetable intake, physical inactivity and obesity, were considered as potential mediators. Generalized structural equation modelling was used to estimate the mediating effects of modifiable risk factors in associations between low SEP and cancer morbidity and mortality in the total population and stratified by sex. Results Modifiable risk factors together explained 45.6% of associations between low SEP and overall cancer morbidity and mortality. Smoking was the most important mediator in the total population and for males, accounting for 15.5% and 40.2% of the total effect, respectively. For females, obesity was the most important mediator. Conclusions Modifiable risk factors are important mediators of socio-economic inequities in cancer morbidity and mortality. Nevertheless, more than half of the variance in these associations remained unexplained. Midstream interventions that target modifiable risk factors may help to alleviate inequities in cancer risk in the short term. However, ultimately, upstream interventions that target structural determinants of health are needed to reduce overall socio-economic inequities in cancer morbidity and mortality.

BACKGROUND: Socioeconomic inequities in diet quality are stable or widening in the United States; however, these trends have not been well characterized in other nations. Moreover, purpose-developed indices of inequities that can provide a more comprehensive and precise perspective of trends in absolute and relative dietary gaps and gradients using multiple indicators of socioeconomic position (SEP) have not yet been used, and can inform strategies to narrow dietary inequities. OBJECTIVES: We quantified nationally representative trends in absolute and relative gaps and gradients in diet quality between 2004 and 2015 according to 3 indicators of SEP among adults in Canada. METHODS: Adults (≥18 y old) who participated in the nationally representative, cross-sectional Canadian Community Health Survey—Nutrition in 2004 (n = 20,880) or 2015 (n = 13,970) were included. SEP was classified using household income (quintiles), education (5 categories), and neighborhood deprivation (quintiles). Dietary intake data from 24-h recalls were used to derive Healthy Eating Index-2015 (HEI-2015) scores. Dietary inequities were quantified using absolute and relative gaps (between the most and least disadvantaged) and absolute [Slope Index of Inequality (SII)] and relative gradients (Relative Index of Inequality). Overall and sex-stratified multivariable linear regression and generalized linear models examined trends in HEI-2015 scores between 2004 and 2015. RESULTS: Mean HEI-2015 scores improved from 55.3 to 59.0 (maximum: 100); however, these trends were not consistently equitable. Whereas inequities in HEI-2015 scores were stable in the total population and in females, the absolute gap [from 1.60 (95% CI: 0.09, 3.10) to 4.27 (95% CI: 2.20, 6.34)] and gradient [from SII = 2.09 (95% CI: 0.45, 3.73) to SII = 4.84 (95% CI: 2.49, 7.20)] in HEI-2015 scores for household income, and the absolute gradient for education [from SII = 8.06 (95% CI: 6.41, 9.71) to SII = 10.52 (95% CI: 8.73, 12.31)], increased in males. CONCLUSIONS: Absolute and relative gaps and gradients in overall diet quality remained stable or widened between 2004 and 2015 among adults in Canada.

OBJECTIVES: It is vital for individuals with type 2 diabetes (T2DM) to adhere to a healthy dietary pattern to maintain optimal blood glucose levels and overall health. Increasing costs of healthy foods, however, are a barrier to maintaining healthful dietary patterns, particularly for individuals with T2DM who are experiencing food insecurity. Poor diet quality may result in difficulties maintaining optimal blood glucose levels, leading to higher rates of diabetes complications, and increased acute care usage and costs. Although the adverse impacts of food insecurity on maintaining optimal blood glucose levels are well documented, effective strategies to this among individuals with T2DM are lacking. One approach is providing subsidies to purchase healthy foods through subsidized healthy food prescription programs. These programs may help reduce food insecurity and improve diet quality, thereby improving blood glucose levels and reducing diabetes complications over time. METHODS: A parallel group randomized controlled trial will examine the effectiveness of a subsidized healthy food prescription program compared to a healthy food prescription alone in improving average blood glucose levels (primary outcome), and other secondary outcomes among 404 adults who are experiencing food insecurity and persistent hyperglycemia. The subsidized healthy food prescription program consists of two core elements: 1) A one-time healthy food prescription pamphlet that outlines an evidence-based healthy dietary pattern; 2) A healthy food subsidy of $1.50/day/household member to purchase healthy foods in participating supermarkets for 6 months. At baseline and 6-month follow-up, participants will provide responses to sociodemographic and health-related items, and a variety of patient-reported outcomes. Biochemical and physical measurements will also be obtained. RESULTS: The study's theory of change posits that reducing food insecurity and improving diet quality will be key mediators in improving blood glucose levels, which may reduce diabetes complications, and healthcare usage and costs over time. CONCLUSIONS: The results of this study will demonstrate if a subsidized healthy food prescription program results in meaningful changes in average blood glucose levels and other clinically relevant outcomes. FUNDING SOURCES: Alberta Innovates, Alberta Health Services.

OBJECTIVES: Socioeconomic inequities in cardiovascular diseases (CVDs) are greater in females than males. However, the mechanisms underpinning the excess CVD risk conferred by low socioeconomic position (SEP) in females remain unclear. This study aimed to quantify the mediating effects of modifiable risk factors to associations between SEP and CVD morbidity and mortality. METHODS: We combined eight cycles of the nationally-representative cross-sectional Canadian Community Health Survey (2000–2011) to identify a cohort of adults (≥35 years) without CVD at the time of survey administration (n = 289,800). Survey data were linked to administrative health (Hospital Discharge Abstract Database) and mortality (Canadian Mortality Database) records for 2000–2012. SEP was captured by a latent variable consisting of self-reported educational level and household income. Self-reported modifiable risk factors, including smoking, physical inactivity, obesity, diabetes, and hypertension were considered as potential mediators. The outcome was CVD morbidity and mortality as reported in administrative health and mortality databases. Generalized structural equation modeling was used to estimate the mediating effects of modifiable risk factors in associations between SEP and CVD morbidity and mortality in males and females. RESULTS: The total effects of SEP on CVD morbidity and mortality were higher in females than in males. The modifiable risk factors mediated the higher proportion of the total effects in females than in males (87.80% vs 687.8%). Smoking was the most important mediator of associations between SEP and CVD morbidity and mortality for both males and females. The pathways linking SEP with obesity, diabetes and hypertension and subsequent CVD morbidity and mortality were significant in females but not among males. CONCLUSIONS: These findings revealed evidence of some sex-specific patterns in the mediating effects of modifiable risk factors on associations between SEP and CVD morbidity and mortality. The findings suggest that different strategies may be required to reduce inequities in CVD in males and females. FUNDING SOURCES: This study was funded by a Libin Cardiovascular Research Institute of Alberta Innovation Seed Grant and the Petro-Canada Young Innovator Award in Community Health.

Background: The high cost of many healthy foods poses a significant challenge to the maintenance of optimal blood glucose levels for adults with type 2 diabetes (T2DM) who are experiencing food insecurity, leading to diabetes complications and excess acute care usage and costs. Subsidized healthy food prescription programs may help to reduce food insecurity by financially supporting patients to improve their diet quality, prevent diabetes complications and avoid acute care use. This study will use a type 2 hybrid effectiveness-implementation design to examine the reach, effectiveness, adoption, implementation and maintenance (RE-AIM) of a subsidized healthy food prescription program for adults who are experiencing food insecurity and persistent hyperglycemia. A randomized controlled trial (RCT) will investigate program effectiveness via impact on blood glucose levels (primary outcome), food insecurity, diet quality and other clinical and patient-reported outcomes. A modelling study will estimate longer-term program effectiveness in reducing diabetes-related complications, resource use and costs. An implementation study will examine all RE-AIM domains, including reasons behind program successes and failures, fidelity, mechanisms of impact, contextual determinants of effective implementation and sustainability. Methods: 404 adults who are experiencing food insecurity and persistent hyperglycemia, including adults who identify as Indigenous, will be randomized to a subsidized healthy food prescription intervention (n=202) or a healthy food prescription comparison group (n=202). Both groups will receive a healthy food prescription. The intervention group will additionally receive $1.50/day/household member to purchase healthy foods in supermarkets for 6 months. The implementation process will follow the Quality Implementation Framework. Outcomes will be assessed at baseline and follow-up (6 months) in the RCT and analyzed using mixed-effects linear and multinomial logistic/ordinal regression models. Longer-term outcomes will be modelled using the validated UK Prospective Diabetes Study outcomes simulation model-2. Implementation processes and outcomes will be continuously measured via quantitative and qualitative data and analyzed using descriptive statistics and theory-informed directed content analysis, respectively. Discussion: This research will provide a comprehensive body of data with high internal and external validity to assist policymakers and practitioners to effectively and rapidly translate the evidence generated into programs and policies to support patients with T2DM who are experiencing food insecurity. Trial registration: ClinicalTrials.gov NCT04725630 (January 25, 2021; https://www.clinicaltrials.gov/ct2/show/NCT04725630?term=Subsidized+Healthy+Food+Prescription+Program&cond=Diabetes+Mellitus%2C+Type+2&draw=2&rank=1).

Sarah Downer and colleagues review new efforts to incorporate food and nutrition into prevention, management, and treatment of diet related disease in healthcare systems

Objectives School-based daily physical activity (DPA) policies represent a promising intervention for increasing physical activity levels among children. Between 2005 and 2010, five Canadian provinces adopted and implemented DPA policies. This national case study explored facilitators and challenges to developing, adopting and implementing DPA policies from the perspective of key stakeholders (‘policy-influencers’) in these five provinces. Methods Development, adoption and implementation of DPA policies at the provincial level was the phenomenon of interest, with each province constituting a distinct case. Semi-structured interviews were conducted with 15 purposively selected policy-influencers across the five case provinces. Cases were first analyzed separately, and then concurrently in a cross-case comparison. Qualitative content analysis was used to code interviews and develop themes. Results Four themes related to the development, adoption, and implementation of DPA policies emerged: existing resources and capacity for policy change; top-down policy development/adoption and bottom-up implementation; political will and windows of opportunity; and, ideology and policy change. Each of these themes encompassed facilitators and challenges related to policy processes surrounding development, adoption and implementation of DPA policies. Conclusion These findings can inform development of future health-related polices in schools. Stakeholders can, for instance, remain attuned to the opening of political windows and capitalize on them as an opportunity to advocate for policy change or create communities of practice to enhance coordination among policy stakeholders. Future studies that explore why other jurisdictions have failed to adopt DPA policies might yield novel insights regarding leverage points to support widespread diffusion of DPA policies., Highlights • Between 2005 and 2010, five Canadian provinces adopted and implemented DPA policies. • A national case study explored facilitators and challenges to adopting and implementing provincial DPA policies. • Four key themes related to policy change: capacity, adoption and implementation, political will, and ideology. • Recommendations can inform development and implementation of school-based physical activity and health promotion policy.

Smart and connected communities (SCC) describe the shift in urbanism towards technological solutions and the production of knowledge-based industries. Local governments are recognizing the opportunity of this paradigm shift to improve services, create more efficient policies, and increase the wellbeing of their citizens. These new tools create the possibility for local governments to respond differently to “wicked problems” facing cities, including increasing chronic disease prevalence. Using lung and skin cancers as case studies, we present smart prevention as a novel approach that uses smart city-enabled built environment monitoring to trigger local cancer-prevention policies. First, we present results of a scoping review we conducted to describe mechanisms by which features in urban built and social environments are hypothesized to contribute to lung cancer and skin cancer. We systematically searched fourteen electronic databases, yielding 47 articles that examined associations between built and social environment features and lung cancer (n = 34), and/or built and social environment features and skin cancer (n = 13). Second, we present a narrative review of smart city theory and governance. Third, we use findings from both reviews to draw conceptual links between cancer prevention and SCC – presenting a hypothetical suite of built environment and policy interventions to prevent lung and skin cancer.

Background Increasing inequalities in rates of obesity and chronic disease may be partly fuelled by increasing dietary inequalities, however very few nationally representative analyses of socioeconomic trends in dietary inequalities exist. The release of the 2011–13 Australian National Nutrition and Physical Activity Survey data allows investigation of change in dietary intake according to socioeconomic position (SEP) in Australia using a large, nationally representative sample, compared to the previous national survey in 1995. This study examined change in dietary intakes of energy, macronutrients, fiber, fruits and vegetables among Australian adults between 1995 and 2011–13, according to SEP. Methods Cross-sectional data were obtained from the 1995 National Nutrition Survey, and the 2011–13 National Nutrition and Physical Activity Survey. Dietary intake data were collected via a 24-h dietary recall (n = 17,484 adults) and a dietary questionnaire (n = 15,287 adults). SEP was assessed according to educational level, equivalized household income, and area-level disadvantage. Survey-weighted linear and logistic regression models, adjusted for age, sex/gender and smoking status, examined change in dietary intakes over time. Results Dietary intakes remained poor across the SEP spectrum in both surveys, as evidenced by high consumption of saturated fat and total sugars, and low fiber, fruit and vegetable intakes. There was consistent evidence (i.e. according to ≥2 SEP measures) of more favorable changes in dietary intakes of carbohydrate, polyunsaturated and monounsaturated fat in higher, relative to lower SEP groups, particularly in women. Intakes of energy, total fat, saturated fat and fruit differed over time according to a single SEP measure (i.e. educational level, household income, or area-level disadvantage). There were no changes in intake of total sugars, protein, fiber or vegetables according to any SEP measures. Conclusions There were few changes in dietary intakes of energy, most macronutrients, fiber, fruits and vegetables in Australian adults between 1995 and 2011–13 according to SEP. For carbohydrate, polyunsaturated and monounsaturated fat, more favorable changes in intakes occurred in higher SEP groups. Despite the persistence of suboptimal dietary intakes, limited evidence of widening dietary inequalities is positive from a public health perspective. Trial registration Clinical trials registration: ACTRN12617001045303. Electronic supplementary material The online version of this article (10.1186/s12966-018-0666-4) contains supplementary material, which is available to authorized users.

Background Dietary patterns that align with recommended guidelines appear to minimize long-term weight gain in the general population. However, prospective associations between diet quality and weight change in disadvantaged adults have not been examined. This study examined associations between concurrent change in diet quality and body mass index (BMI) over 5 years among women living in socioeconomically disadvantaged neighbourhoods. Methods Dietary intake and BMI were self-reported among 1242 women living in disadvantaged neighbourhoods in Victoria, Australia, at three time points from 2007/08 to 2012/13. Diet quality was evaluated using the Australian Dietary Guideline Index (DGI). Associations between concurrent change in diet quality and BMI were assessed over the three time points using fixed effects and mixed models. Models were adjusted for age, smoking, menopausal status, education, marital status, number of births, urban/rural location and physical activity. Results Average BMI increased by 0.14 kg/m2 per year increase in age in the fixed effects model, and by 0.13 kg/m2 in the mixed model (P

As currently conceived, precision public health is at risk of becoming precision medicine at a population level. This paper outlines a framework for precision public health that, in contrast to its current operationalisation, is consistent with public health principles because it integrates factors at all levels, while illuminating social position as a fundamental determinant of health and health inequities. We review conceptual foundations of public health, outline a proposed framework for precision public health and describe its operationalisation within research and practice. Social position shapes individuals’ unequal experiences of the social determinants of health. Thus, in our formulation, precision public health investigates how multiple dimensions of social position interact to confer health risk differently for precisely defined population subgroups according to the social contexts in which they are embedded, while considering relevant biological and behavioural factors. It leverages this information to uncover the precise and intersecting social structures that pattern health outcomes, and to identify actionable interventions within the social contexts of affected groups. We contend that studies informed by this framework offer greater potential to improve health than current conceptualisations of precision public health that do not address root causes. Moreover, expanding beyond master categories of social position and operationalising these categories in more precise ways across time and place can enrich public health research through greater attention to the heterogeneity of social positions, their causes and health effects, leading to the identification of points of intervention that are specific enough to be useful in reducing health inequities. Failure to attend to this level of particularity may mask the true nature of health risk, the causal mechanisms at play and appropriate interventions. Conceptualised thus, precision public health is a research endeavour with much to offer by way of understanding and intervening on the causes of poor health and health inequities.As currently conceived, precision public health is at risk of becoming precision medicine at a population level. This paper outlines a framework for precision public health that, in contrast to its current operationalization, is consistent with public health principles because it integrates factors at all levels, while illuminating social position as a fundamental determinant of health and health inequities. We review conceptual foundations of public health, outline a proposed framework for precision public health and describe its operationalization within research and practice. Social position shapes individuals’ unequal experiences of the social determinants of health. Thus, in our formulation, precision public health investigates how multiple dimensions of social position interact to confer health risk differently for precisely defined population subgroups according to the social contexts in which they are embedded, while considering relevant biological and behavioural factors. It leverages this information to uncover the precise and intersecting social structures that pattern health outcomes, and to identify actionable interventions within the social contexts of affected groups. We contend that studies informed by this framework offer greater potential to improve health than current conceptualizations of precision public health that do not address root causes. Moreover, expanding beyond master categories of social position and operationalizing these categories in more precise ways across time and place can enrich public health research through greater attention to the heterogeneity of social positions, their causes and health effects, leading to identification of points of intervention that are specific enough to be useful in reducing health inequities. Failure to attend to this level of particularity may mask the true nature of health risk, the causal mechanisms at play and appropriate interventions. Conceptualized thus, precision public health is a research endeavour with much to offer by way of understanding and intervening on the causes of poor health and health inequities.

Background Emerging evidence shows sedentary behaviour may be associated with mental health outcomes. Yet, the strength of the evidence linking sedentary behaviour and stress is still unclear. This study aimed to synthesise evidence regarding associations between time spent in sedentary behaviour and stress in adults. Methods A systematic search was conducted (January 1990 – September 2019). Following PRISMA guidelines, an evaluation of methodological quality, and best-evidence synthesis of associations between time in sedentary behaviour (including sitting time, TV viewing, computer use) and stress were presented. Twenty-six studies reporting on data from n = 72,795 people (age 18-98y, 62.7% women) were included. Results Across the studies (n = 2 strong-, n = 10 moderate- and n = 14 weak-quality), there was insufficient evidence that overall time spent in sedentary behaviour and sitting time were associated with stress, particularly when using self-report measures of sedentary behaviour or stress. There was strong evidence of no association between TV viewing, or computer use and stress. Amongst studies using objective measures of sedentary behaviour and/or stress there was also strong evidence of no association. Conclusion Although previous research suggested sedentary behaviour may be linked to mental health outcomes such as depression and anxiety, the evidence for an association between various types of sedentary behaviour and stress is limited in quality, and associations are either inconsistent or null. High-quality longitudinal/interventional research is required to confirm findings and determine the direction of associations between different contexts (i.e. purpose) and domains (i.e. leisure, occupational, transport) of sedentary behaviour and stress.

OBJECTIVES: Morbidity and mortality from cardiovascular diseases (CVDs) are higher among individuals with a lower, compared to those with a higher socioeconomic position (SEP). However, the contribution of modifiable risk factors to these inequities is not known. This study aimed to examine whether and to what extent modifiable risk factors mediate associations between SEP and CVD morbidity and mortality in a nationally representative sample of Canadian adults. METHODS: We used a population-based prospective observational cohort design whereby participants who completed the Canadian Community Health Survey (2000–2011; n = 289,800) were followed longitudinally for CVD morbidity and mortality using administrative health and mortality data in the Discharge Abstract Database and the Canadian Mortality Database until 31 March 2013. Participants were included if they were at least 35 years of age and did not self-report CVD at the time of survey administration. The exposure of interest was SEP, which was measured as a latent variable consisting of annual household income and educational attainment. Potential mediators included smoking, physical inactivity, obesity, diabetes, and hypertension. The primary outcome of interest was CVD morbidity and mortality, which was defined as the first fatal or nonfatal CVD event that occurred during follow-up (6.2 years). Generalized structural equation modeling was used to test the mediating effects of modifiable risk factors in associations between SEP and CVD morbidity and mortality. RESULTS: SEP was associated with CVD morbidity and mortality. Modifiable risk factors mediated 80% of associations between SEP and CVD morbidity and mortality. Smoking was the most important mediator of these associations. Obesity mediated associations between SEP and CVD individually and jointly with diabetes or hypertension. CONCLUSIONS: These findings point to modifiable risk factors as potential targets for interventions to reduce inequities in CVD morbidity and mortality. Knowledge of pathways linking SEP with CVD is essential to inform targeted interventions to reduce socioeconomic inequities in CVD morbidity and mortality. FUNDING SOURCES: This study was funded by a Libin Cardiovascular Research Institute of Alberta Innovation Seed Grant and the Petro-Canada Young Innovator Award in Community Health.

ObjectiveThe present study aimed to: (i) examine associations between food store patronage and diet and weight-related outcomes; and (ii) explore consumer motivations for visiting different types of food store.DesignA stratified probability sample of residents completed household and individual-level surveys in 2009/2010 on food purchasing patterns and motivations, dietary intake, waist circumference (WC), weight and height. Diet quality was calculated using the Healthy Eating Index for Canada from a subset of participants (n 1362). Generalized estimating equations were created in 2015 to examine how frequency of patronizing different types of food store was associated with diet quality, intake of fruits and vegetable, mean intake of energy (kcal) sodium and saturated fat, WC and BMI.SettingThree mid-sized urban municipalities in Ontario, Canada.SubjectsA representative sample of residents (n 4574).ResultsParticipants who shopped frequently at food co-ops had significantly better diet quality (β=5·3; 99 % CI 0·3, 10·2) than those who did not. BMI and WC were significantly lower among those who frequently shopped at specialty shops (BMI, β=−2·1; 99 % CI −3·0, −1·1; WC, β=−4·8; 99 % CI −7·0, −2·5) and farmers’ markets (BMI, β=−1·4; 99 % CI −2·3, −0·5; WC, β=−3·8; 99 % CI −6·0, −1·6) compared with those who did not. Relative importance of reasons for food outlet selection differed by large (price, food quality) v. small (proximity, convenient hours) shopping trip and by outlet type.ConclusionsFindings contribute to our understanding of food store selection and have implications for potentially relevant retail food intervention settings.

IntroductionLow-income populations have poorer diet quality and lower psychosocial well-being than their higher-income counterparts. These inequities increase the burden of chronic disease in low-income populations. Farmers’ market subsidies may improve diet quality and psychosocial well-being among low-income populations. In Canada, the British Columbia (BC) Farmers’ Market Nutrition Coupon Programme (FMNCP) aims to improve dietary patterns and health among low-income participants by providing coupons to purchase healthy foods from farmers’ markets. This study will assess the impact of the BC FMNCP on the diet quality and psychosocial well-being of low-income adults and explore mechanisms of programme impacts.Methods and analysisIn a parallel group randomised controlled trial, low-income adults will be randomised to an FMNCP intervention (n=132) or a no-intervention control group (n=132). The FMNCP group will receive 16 coupon sheets valued at CAD$21/sheet over 10–15 weeks to purchase fruits, vegetables, dairy, meat/poultry/fish, eggs, nuts and herbs at farmers’ markets and will be invited to participate in nutrition skill-building activities. Overall diet quality (primary outcome), diet quality subscores, mental well-being, sense of community, food insecurity and malnutrition risk (secondary outcomes) will be assessed at baseline, immediately post-intervention and 16 weeks post-intervention. Dietary intake will be assessed using the Automated Self-Administered 24-hour Dietary Recall. Diet quality will be calculated using the Healthy Eating Index-2015. Repeated measures mixed-effect regression will assess differences in outcomes between groups from baseline to 16 weeks post-intervention. Furthermore, 25–30 participants will partake in semi-structured interviews during and 5 weeks after programme completion to explore participants’ experiences with and perceived outcomes from the programme.Ethics and disseminationEthical approval was obtained from the University of Calgary Conjoint Health Research Ethics Board, Rutgers University Ethics and Compliance, and University of Waterloo Office of Research Ethics. Findings will be disseminated through policy briefs, conference presentations and peer-reviewed publications.Trial registration numberNCT03952338.

The Automated Self-Administered Dietary Assessment Tool (ASA24) is a web-based tool that guides participants through completion of a 24-h dietary recall and automatically codes the data. Despite the advantages of automation, eliminating interviewer contact may diminish data quality. Usability testing can assess the extent to which individuals can use the ASA24 to report dietary intake with efficiency, effectiveness, and satisfaction. This mixed-methods study evaluated the usability of the ASA24 to quantify user performance and to examine qualitatively usability issues in a sample of low-income adults (85% female, 48.2 years on average) participating in a nutrition coupon program. Thirty-nine participants completed a 24-h dietary recall using the ASA24. Audio and screen recordings, and survey responses were analyzed to calculate task times, success rates, and usability issue frequency. Qualitative data were analyzed thematically to characterize usability issues. Only one participant was able to complete a dietary recall unassisted. We identified 286 usability issues within 22 general usability categories, including difficulties using the search function, misunderstanding questions, and uncertainty regarding how to proceed to the next step, 71.4% of participants knowingly misentered dietary information at least once. Usability issues may diminish participation rates and compromise the quality of ASA24 dietary intake data. Researchers should provide on-demand technical support and designers should improve the intelligence and flexibility of the ASA24&rsquo, s search functionality.

Background Children’s recreational sport settings typically sell energy dense, low nutrient products; however, it is unknown whether the same types of food and beverages are also marketed in these settings. Understanding food marketing in sports settings is important because the food industry often uses the promotion of physical activity to justify their products. This study aimed to document the ‘exposure’ and ‘power’ of food marketing present in public recreation facilities in Canada and assess differences between provinces with and without voluntary provincial nutrition guidelines for recreation facilities. Methods Food marketing was measured in 51 sites using the Food and beverage Marketing Assessment Tool for Settings (FoodMATS). The frequency and repetition (‘exposure’) of food marketing and the presence of select marketing techniques, including child-targeted, sports-related, size, and healthfulness (‘power’), were assessed. Differences in ‘exposure’ and ‘power’ characteristics between sites in three guideline provinces (n = 34) and a non-guideline province (n = 17) were assessed using Pearson’s Chi squared tests of homogeneity and Mann-Whitney U tests. Results Ninety-eight percent of sites had food marketing present. The frequency of food marketing per site did not differ between guideline and non-guideline provinces (median = 29; p = 0.576). Sites from guideline provinces had a significantly lower proportion of food marketing occasions that were “Least Healthy” (47.9%) than sites from the non-guideline province (73.5%; p

Introduction Unhealthy foods are widely available in public settings across Canada, contributing to diet-related chronic diseases, such as obesity. This is a concern given that public facilities often provide a significant amount of food for consumption by vulnerable groups, including children and seniors. Healthy food procurement policies, which support procuring, distributing, selling, and/or serving healthier foods, have recently emerged as a promising strategy to counter this public health issue by increasing access to healthier foods. Although numerous Canadian health and scientific organizations have recommended such policies, they have not yet been broadly implemented in Canada. Methods To inform further policy action on healthy food procurement in a Canadian context, we: (1) conducted an evidence synthesis to assess the impact of healthy food procurement policies on health outcomes and sales, intake, and availability of healthier food, and (2) hosted a consensus conference in September 2014. The consensus conference invited experts with public health/nutrition policy research expertise, as well as health services and food services practitioner experience, to review evidence, share experiences, and develop a consensus statement/recommendations on healthy food procurement in Canada. Results Findings from the evidence synthesis and consensus recommendations for healthy food procurement in Canada are described. Specifically, we outline recommendations for governments, publicly funded institutions, decision-makers and professionals, citizens, and researchers. Conclusion Implementation of healthy food procurement policies can increase Canadians’ access to healthier foods as part of a broader vision for food policy in Canada.

Background Men of low socioeconomic position (SEP) are less likely than those of higher SEP to consume fruits and vegetables, and more likely to eat processed discretionary foods. Education level is a widely used marker of SEP. Few studies have explored determinants of socioeconomic inequalities in men’s eating behaviours. The present study aimed to explore intrapersonal, social and environmental factors potentially contributing to educational inequalities in men’s eating behaviour. Methods Thirty Australian men aged 18–60 years (15 each with tertiary or non-tertiary education) from two large metropolitan sites (Melbourne, Victoria; and Newcastle, New South Wales) participated in qualitative, semi-structured, one-on-one telephone interviews about their perceptions of influences on their and other men’s eating behaviours. The social ecological model informed interview question development, and data were examined using abductive thematic analysis. Results Themes equally salient across tertiary and non-tertiary educated groups included attitudes about masculinity; nutrition knowledge and awareness; ‘moralising’ consumption of certain foods; the influence of children on eating; availability of healthy foods; convenience; and the interplay between cost, convenience, taste and healthfulness when choosing foods. More prominent influences among tertiary educated men included using advanced cooking skills but having relatively infrequent involvement in other food-related tasks; the influence of partner/spouse support on eating; access to healthy food; and cost. More predominant influences among non-tertiary educated men included having fewer cooking skills but frequent involvement in food-related tasks; identifying that ‘no-one’ influenced their diet; having mobile worksites; and adhering to food budgets. Conclusions This study identified key similarities and differences in perceived influences on eating behaviours among men with lower and higher education levels. Further research is needed to determine the extent to which such influences explain socioeconomic variations in men’s dietary intakes, and to identify feasible strategies that might support healthy eating among men in different socioeconomic groups. Electronic supplementary material The online version of this article (10.1186/s12889-018-6162-6) contains supplementary material, which is available to authorized users.

Background The impacts of supermarket-based nutrition promotion interventions might be overestimated if participants shift their proportionate food purchasing away from their usual stores. This study quantified whether participants who received price discounts on fruits and vegetables (FV) in the Supermarket Healthy Eating for Life (SHELf) randomized controlled trial (RCT) shifted their FV purchasing into study supermarkets during the intervention period. Methods Participants were 642 females randomly assigned to a 1) skill-building (n = 160), 2) price reduction (n = 161), 3) combined skill-building and price reduction (n = 160), or 4) control (n = 161) group. Participants self-reported the proportion of FV purchased in study supermarkets at baseline, 3- and 6-months post-intervention. Fisher’s exact and χ2 tests assessed differences among groups in the proportion of FV purchased in study supermarkets at each time point. Multinomial logistic regression assessed differences among groups in the change in proportionate FV purchasing over time. Results Post-intervention, 49% of participants purchased ≥50% of their FV in study supermarkets. Compared to all other groups, the price reduction group was approximately twice as likely (RRR: 1.8-2.2) to have increased proportionate purchasing of FV in study supermarkets from baseline to post-intervention (p

Dietary patterns were examined in a convenience sample of 36 female University of Alberta students, all of whom had completed at least one nutrition course. Data from a validated food frequency questionnaire were used to determine if students had a dietary pattern similar to that recommended in Eating Well with Canada's Food Guide (EWCFG) or by the Traditional Healthy Mediterranean Diet Pyramid (THMDP), as measured using a Mediterranean Diet Quality Index Score. No student consumed the THMDP minimum number of portions of legumes, seeds, and nuts, of olive oil, or of whole grains. The majority did not meet the minimum EWCFG recommendations for any food group. The results suggest that nutrition education alone may be insufficient to ensure optimal dietary patterns among female university students. The methodology reported in this study is novel in assessing whether dietary patterns resemble the THMDP or the EWCFG.

We used our experience assisting in the development of and evaluating the Alberta Nutrition Guidelines for Children and Youth (ANGCY) as a basis for exploring roles that registered dietitians (RDs) can play within health promotion, and how others perceive the RD role. Data were generated via 12 key informant interviews and observations during a multiple case study of recreation facilities that had and had not adopted the ANGCY. We also drew on dialogue and personal observations during development of the ANGCY. Dietitians working in government, academia, community settings, private practice, and industry played an important role throughout the development and implementation of the ANGCY. Some sectors proactively sought RD expertise, while others with less ability to pay accessed RDs’ services less. Informants generally regarded RDs in a positive light. Findings indicate the profession should incrementally adjust training models to reflect emerging areas of practice, and highlight the need for RDs to proactively seek new avenues in which to apply their skills. These actions will help RDs remain the trusted source of food and nutrition information, not only in health care, but also within health promotion settings.

Maternal nutrient intake in the prenatal period is an important determinant of fetal growth and development and supports maternal health. Many women, however, fail to meet their prenatal nutrient requirements through diet alone and are therefore advised to consume nutrient supplements. The purpose of this study was to describe the use of natural health products (NHP) by pregnant women in each trimester of pregnancy. Women (n = 599) participating in the first cohort of the Alberta Pregnancy Outcomes and Nutrition (APrON) study completed an interviewer-administered supplement intake questionnaire during each trimester of pregnancy. NHP use was high, with >90% taking multivitamin/mineral supplements, and nearly half taking at least one additional single-nutrient supplement. Compliance with supplementation guidelines was high for folic acid (>90%), vitamin D (∼70%) and calcium (∼80%), but low for iron (

Background Food manufacturers have made public statements and voluntary commitments, such as the Healthier Australia Commitment (HAC), to improve the nutritional quality of foods. However, limited information about the nutritional quality or healthfulness of new products makes it difficult to determine if manufacturers are doing this. The purpose of this study was to assess the healthfulness of new food products released into the Australian retail market in 2015, and whether those companies who were HAC members released healthier food options compared to non-HAC members. Methods This cross-sectional study assessed the healthfulness of all new retail food products launched in Australia in 2015 as indexed in Mintel’s Global New Products Database. Healthfulness was assessed using three classification schemes: Healthy Choices Framework Victoria, Australian Dietary Guidelines and NOVA Food Classification System. Descriptive statistics and chi-squared tests described and compared the number and proportions of new foods falling within each of the food classification schemes’ categories for companies that were and were not HAC members. Results In 2015, 4143 new food products were launched into the Australian market. The majority of new products were classified in each schemes’ least healthy category (i.e. red, discretionary and ultra-processed). Fruits and vegetables represented just 3% of new products. HAC members launched a significantly greater proportion of foods classified as red (59% vs 51% for members and non-members, respectively) discretionary (79% vs 61%), and ultra-processed (94% vs 81%), and significantly fewer were classified as green (8% vs 15%), core foods (18% vs 36%) and minimally processed (0% vs 6%) (all p

Supermarket Healthy Eating for Life (SHELf) was a randomized controlled trial that operationalized a socioecological approach to population-level dietary behaviour change in a real-world supermarket setting. SHELf tested the impact of individual (skill-building), environmental (20 % price reductions), and combined (skill-building + 20 % price reductions) interventions on women’s purchasing and consumption of fruits, vegetables, low-calorie carbonated beverages and water. This process evaluation investigated the reach, effectiveness, implementation, and maintenance of the SHELf interventions. RE-AIM provided a conceptual framework to examine the processes underlying the impact of the interventions using data from participant surveys and objective sales data collected at baseline, post-intervention (3 months) and 6-months post-intervention. Fisher’s exact, χ 2 and t-tests assessed differences in quantitative survey responses among groups. Adjusted linear regression examined the impact of self-reported intervention dose on food purchasing and consumption outcomes. Thematic analysis identified key themes within qualitative survey responses. Reach of the SHELf interventions to disadvantaged groups, and beyond study participants themselves, was moderate. Just over one-third of intervention participants indicated that the interventions were effective in changing the way they bought, cooked or consumed food (p

Summary Background & aims This study assessed the effects of administering a lipid emulsion containing eicosapentaenoic and docosahexaenoic acid before and after open-heart surgery on cytokine production and length of hospital stay in infants. Methods Thirty-two infants (40 ± 2.3 weeks gestational age; 10.6 days at time of surgery) undergoing open-heart surgery with cardiopulmonary bypass were randomized to receive an intravenous lipid emulsion with (treatment) or without (control) eicosapentaenoic and docosahexaenoic acid in this prospective, randomized, double-blind, controlled trial. Results Mean plasma TNF-α concentration was significantly (p = 0.003) lower in the treatment (5.9 pg/mL) compared to the control group (14.8 pg/mL). In infants without sepsis, plasma TNF-α did not differ according to treatment, however when sepsis developed, mean plasma TNF-α was 21.1 pg/mL and 1.5 pg/mL (p = 0.0007) in control and treatment groups, respectively. Plasma TNF-α was positively correlated with length of hospital stay in the control group (p = 0.01), and negatively correlated with length of stay in the treatment group (p = 0.004), with a significant time by treatment interaction (p = 0.02). Conclusions Providing a lipid emulsion containing eicosapentaenoic and docosahexaenoic acid reduces TNF-α concentrations in infants undergoing open-heart surgery. Lipid emulsions containing eicosapentaenoic and docosahexaenoic acid may ameliorate the inflammatory response among critically ill infants. This trial was registered at clinicaltrials.gov as NCT00336908.

Although obesity was rarely observed among children 30 years ago, it is now evident among Canadian children of all ages. Currently, 15.2% of 2- to 5-year-old children are overweight, whereas 6.3% are obese. Limited data suggest that poor dietary and physical activity patterns are increasing obesity risk among these young children. Body weight and lifestyle behaviours are known to track from childhood to adulthood, thereby increasing the risk for obesity and other chronic diseases later in life. Intrauterine life, infancy, and the preschool years may all include critical periods that program the long-term regulation of energy balance, and therefore obesity-prevention strategies should be initiated in utero and continue throughout childhood and adolescence. Although single-strategy obesity-prevention initiatives have had limited success, programs that target multiple behaviours may help reduce body weight and body fat among young children. Parental involvement is key to the success of obesity-prevention programs at a young age, as parents have primary control over their children’s food and activity environments. Accordingly, parental obesity is the best predictor of childhood obesity. Parents should be encouraged to teach and role model healthy lifestyle behaviours for their young children. Health professionals can also be involved in obesity prevention, as they are ideally placed to identify young children at risk for obesity. By calculating and plotting the body mass index for all children, and initiating obesity-prevention strategies in utero, health professionals can help curb the rise in overweight and obesity among young children.

In developed countries, certain population groups are at increased risk of consuming inadequate quantities of fruits and vegetables for good health. Specifically, this includes persons of low socioeconomic position (SEP), such as those with low levels of education, on low incomes, working in low status occupations, or living in socioeconomically disadvantaged neighborhoods. Our levels of understanding around the reasons for the socioeconomic gradients in fruit and vegetable consumption vary among age groups. This chapter presents an overview of evidence of SEP variations in fruit and vegetable consumption in children, adolescents, adults, and older adults. It also details the evidence describing potential mechanisms underlying these differences. Implications of these data for both future research and health policy and practice are described.

Background Sugar-sweetened beverage consumption is associated with morbidity and mortality. The retail food environment influences food and beverage purchasing and consumption. This study assesses the impact of a community pharmacy’s removal of sweet beverages on overall community sales of carbonated soft drinks (CSD) in a rural setting. We also examined whether the pharmacy intervention affected CSD sales in the town’s other food stores. Methods Weekly CSD sales data were acquired from the three food retailers in the town of Baddeck, Nova Scotia (January 1, 2013 to May 8, 2015, n = 123 weeks). Autoregressive integrated moving average (ARIMA) analysis was used to analyse the interrupted time series data and estimate the impact of the pharmacy intervention (September 11, 2014) on overall CSD sales at the community level. Data were analysed in 2015. Results Before the intervention, the pharmacy accounted for approximately 6 % of CSD sales in the community. After the intervention, declines in total weekly average community CSD sales were not statistically significantly. CSD sales at the other food stores did not increase after the pharmacy intervention. Conclusions This study was among the first to examine the impact of a restrictive retail food environment intervention, and found a non-significant decline in CSD sales at the community level. It is the first study to examine a retail food environment intervention in a community pharmacy. Pharmacies may have an important role to play in creating healthy retail food environments.

OBJECTIVES: The field of retail food environments research is relatively new in Canada. The objective of this scoping review is to provide an overview of retail food environments research conducted before July 2015 in Canada. Specifically, this review describes research foci and key findings, identifies knowledge gaps and suggests future directions for research. METHODS: A search of published literature concerning Canadian investigations of retail food environment settings (food stores, restaurants) was conducted in July 2015 using PubMed, Web of Science, Scopus, PsychInfo and ERIC. Studies published in English that reported qualitative or quantitative data on any aspect of the retail food environment were included, as were conceptual papers and commentaries. SYNTHESIS: Eighty-eight studies were included in this review and suggest that the field of retail food environments research is rapidly expanding in Canada. While only 1 paper was published before 2005, 66 papers were published between 2010 and 2015. Canadian food environments research typically assessed either the socio-economic patterning of food environments ( n = 28) or associations between retail food environments and diet, anthropometric or health outcomes ( n = 33). Other papers profiled methodological research, qualitative studies, intervention research and critical commentaries ( n = 27). Key gaps in the current literature include measurement inconsistency among studies and a lack of longitudinal and intervention studies. CONCLUSION: Retail food environments are a growing topic of research, policy and program development in Canada. Consistent methods (where appropriate), longitudinal and intervention research, and close partnerships between researchers and key stakeholders would greatly advance the field of retail food environments research in Canada.

Objective The purpose of the Report Card on Healthy Food Environments and Nutrition for Children is to assess how current environments and policies in Canada support or create barriers to improving children's dietary behaviours and body weights. Method In 2014 we reviewed the literature to identify indicators of the quality of children's food environments and related policies. Scoring systems used to monitor and report on progress on a variety of public health activities were consulted during development of a grading scheme. The Report Card was revised following reviews by an Expert Advisory Committee. Results The Report Card assigns a grade to policies and actions (42 indicators and benchmarks) within 4 micro-environments (physical, communication, economic, social) and within the political macro-environment. Grade-level scores of A through F are assigned that reflect achievement of, supports for, and monitoring of indicator-specific benchmarks. A Canadian Report Card will be released annually starting in 2015. Conclusion The Report Card is a novel tool to monitor the state of children's food environments and supportive policies, inform stakeholders of the state of these environments and policies, engage society in a national discussion, and outline a policy-relevant research agenda for further study .

BACKGROUND Infants with congenital heart lesions who undergo open heart surgery may experience physiologic and metabolic stress in the postoperative period, leading to altered metabolism and hypercatabolism. The purpose of this study was to determine the relationship between energy intake and hospital outcomes during the first 10 days following neonatal open heart surgery. MATERIALS AND METHODS A post hoc analysis of all patients in a prospective randomized controlled trial was performed. Nutrition intake and hospital outcomes were assessed in 32 infants (40 ± 2.2 weeks, 3.4 ± 0.5 kg) in the neonatal and pediatric intensive care units. Infants received parenteral nutrition (PN) for 1-4 days before and 10 days after open heart surgery. Infants were separated into those who received a cumulative energy intake of

Background Recreational facilities are an important community resource for health promotion because they provide access to affordable physical activities. However, despite their health mandate, many have unhealthy food environments that may paradoxically increase the risk of childhood obesity. The Alberta Nutrition Guidelines for Children and Youth (ANGCY) are government-initiated, voluntary guidelines intended to facilitate children’s access to healthy food and beverage choices in schools, childcare and recreational facilities, however few recreational facilities are using them. Methods We used mixed methods within an exploratory multiple case study to examine factors that influenced adoption and implementation of the ANGCY and the nature of the food environment within three cases: an adopter, a semi-adopter and a non-adopter of the ANGCY. Diffusion of Innovations theory provided the theoretical platform for the study. Qualitative data were generated through interviews, observations, and document reviews, and were analysed using directed content analysis. Set theoretic logic was used to identify factors that differentiated adopters from the non-adopter. Quantitative sales data were also collected, and the quality of the food environment was scored using four complementary tools. Results The keys to adoption and implementation of nutrition guidelines in recreational facilities related to the managers’ nutrition-related knowledge, beliefs and perceptions, as these shaped his decisions and actions. The manager, however, could not accomplish adoption and implementation alone. Intersectoral linkages with schools and formal, health promoting partnerships with industry were also important for adoption and implementation to occur. The food environment in facilities that had adopted the ANGCY did not appear to be superior to the food environment in facilities that had not adopted the ANGCY. Conclusions ANGCY uptake may continue to falter under the current voluntary approach, as the environmental supports for voluntary action are poor. Where ANGCY uptake does occur, changes to the food environment may be relatively minor. Stronger government measures may be needed to require recreational facilities to improve their food environments and to limit availability of unhealthy foods.

Background Although the mandate of recreational facilities is to enhance well-being, many offer foods inconsistent with recommendations for healthy eating. Little is known regarding recreational facility food environments and how they might be improved, as few studies exist. The Alberta Nutrition Guidelines for Children and Youth (ANGCY) are intended to ensure access to healthy food choices in schools, childcare and recreational facilities. This study investigated awareness, adoption and implementation of the ANGCY among recreational facilities in Alberta, Canada, one year following their release. Methods A cross-sectional telephone survey was conducted from June - December, 2009 (n = 151) with managers of publicly funded recreational facilities that served food. The questionnaire included 10 closed and 7 open ended questions to assess the organizational priority for healthy eating, awareness, adoption and implementation of the ANGCY. Chi-squared tests examined quantitative variables, while qualitative data were analysed using directed content analysis. Greenhalgh's model of diffusion of complex innovations within health service organizations constituted the theoretical framework for the study. Results One half of respondents had heard of the ANGCY, however their knowledge of them was limited. Although 51% of facilities had made changes to improve the nutritional quality of foods offered in the past year, only a small fraction (11%) of these changes were motivated by the ANGCY. At the time of the survey, 14% of facilities had adopted the ANGCY and 6% had implemented them. Barriers to adoption and implementation were primarily related to perceived negative attributes of the ANGCY, the inner (organizational) context, and negative feedback received during the implementation process. Managers strongly perceived that implementing nutrition guidelines would limit their profit-making ability. Conclusions If fully adopted and implemented, the ANGCY have the potential to make a significant and sustained contribution to improving the recreational facility food environment, however one year following their release, awareness, adoption and implementation of the ANGCY remained low. A mandated policy approach could offer an efficacious, cost-effective means of improving the food environment within recreational facilities.

This study documented the relationships among dietary intake, growth failure, and anemia in a convenience sample of 172 children aged 1 to 5 years in rural Yunnan Province, China. We hypothesized that most children would have suboptimal intakes of key nutrients associated with child growth and anemia and that undernutrition would be more common in children with poor growth and in those who were anemic. Nutrient intakes from three 24-hour recalls were compared with the Dietary Reference Intakes. Height/length and weight were compared with World Health Organization Child Growth Standards to determine if children were malnourished (z score < -2 SD median). Blood was tested for anemia (hemoglobin

Patients routinely seek physicians’ guidance about diet and the relation between nutrition and the prevention and treatment of disease. However, the adequacy of nutrition instruction in undergraduate medical education is questionable. The purpose of this study was to investigate Canadian medical students’ perceptions of and satisfaction with their education in nutrition. At 9 universities across Canada, a 23-item survey questionnaire was distributed in English and French to undergraduate medical students after at least 8 months of medical school. Overall, 9 of 17 universities participated in the survey, and 933 of the 3267 medical students approached completed the survey (response rate, 28.6%). Mean satisfaction with nutrition instruction received during medical school was 4.7 (±0.06) on a scale of 1–10, where 1 is very dissatisfied and 10 is very satisfied, and there were significant differences among schools (p < 0.0001). Students were comfortable in their ability to counsel patients regarding basic nutrition concepts and the role of nutrition in prevention of disease, but were much less comfortable discussing the role of nutrition in the treatment of disease and nutrient requirements across the lifecycle, and in identifying credible sources of nutrition information. Of the 933 respondents, 87.2% believe that their undergraduate program should dedicate more time to nutrition education. The amount of nutrition instruction correlated with student satisfaction (p < 0.0001), but varied among schools. A significant number of students are dissatisfied with the nutrition education they receive and their ability to provide relevant and appropriate nutrition counselling. This study paves the way for further discussions and development of strategies to improve nutrition education in medical schools in Canada.