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Paperwork has always been a central part of bureaucratic work. Over the last few years, bureaucratic procedures have become increasingly standardised and digitalised. Based on interviews and ethnographic fieldwork within welfare offices in Switzerland and Belgium, we reflect on the way evidence is constructed within social policy and cases built for or against noncitizen welfare recipients in order to show how paper truths are established and challenged. The focus on digital practices within public policy implementation highlights how it contributes to enhanced control mechanisms on the implementation level and how migration law continues to guide welfare governance for noncitizens. This allows targeting of the most marginalised groups, whose rights to access state support are institutionally impeded. Through database information flows, official forms, paper reports and face-to-face meetings, we further show how a hybrid form of bureaucratic work emerges, where direct contact with the client is still key, yet highly influenced by standardisation processes. [ABSTRACT FROM AUTHOR]

Background: Augmented reality (AR) is receiving increasing interest as a tool to create an interactive and motivating learning environment. Yet, it is unclear how instructional support affects performance in AR. Objectives: This study sought to explore how varying the instructional support in AR can affect performance‐related behaviours of students with low cognitive abilities during assembly work. Methods: A total of 90 Belgian secondary school students repeatedly executed four different realistic assembly tasks. Three levels of instructional support (low, medium, and high) in AR as well as a control condition with paper instructions with a high level of detail were systematically varied across tasks and participants. Results and Conclusions: Multilevel regression analyses showed that AR instructions yielded lower assembly times and a lower perceived physical effort than paper instructions. Additionally, participants perceived tasks as less complex when given AR instructions with a high or a medium level of detail than when given a low level of detail. No effects of instructional support were established for other performance‐related behaviours, namely necessary assistance, error‐making, cognitive load, competence frustration, and stress. Effect sizes were small, at least among the instructional support conditions studied, yielding a limited base for adaptivity. Presumably, tailoring the instructional support in AR is only beneficial for highly complex tasks. The results might be useful for the design and implementation of AR in educational settings. Lay Description: What is currently known about the subject matter: Augmented reality is knowing increased use in education.Little is known about how to design effective instructional support in augmented reality. What this paper adds: This study represents an initial insight into how to personalize instructional support.The impact of instructional support on augmented reality performance of students with low cognitive abilities was investigated.The study suggests that varying instructional support may lead to differences in performance outcomes. Implications for practitioners: How instructional support is constructed may affect augmented reality learning.The results may inform the design of effective augmented reality learning environments for students with special needs.How individual, contextual, and task‐specific characteristics moderate the effectiveness of instructional support should be further investigated. [ABSTRACT FROM AUTHOR]

The COVID-19 pandemic has disrupted societies globally. Public health institutions were tasked with responding to the pandemic in a dynamic and uncertain context. This paper sheds light on the experiences of COVID-19 response actors as they navigated multi-dimensional crises associated with the pandemic in general and vaccine hesitancy in particular. This research was conducted during the initial phase of the COVID-19 vaccine rollout in Flanders, Belgium. Participants included informants across all levels of the COVID-19 vaccination strategy including but not limited to those producing scientific knowledge, providing policy input, or implementing public health directives locally. 'Crisis' was identified as a recurring theme in interviews with informants. The paper highlights multi-dimensional crises experienced by informants such as the: (i) crisis of prioritization, (ii) crisis of communication, (iii) crisis of the changing image of science, (iv) crisis of epistemic agency and autonomy, and (v) crisis of trust. [ABSTRACT FROM AUTHOR]

Background: The COVID-19 pandemic immensely impacted care provision, including quality of care in general practice. This paper aimed: (1) to assess how Belgian general practices acted upon the six dimensions of quality of care during COVID-19; (2) to study differences between the three Belgian regions; and (3) to benchmark the performance of the Belgian practices against the performance in other European countries. Methods: The data collected from 479 Belgian practices during 2020–2021 using an online survey as part of the international cross-sectional PRICOV-19 study were analyzed. Hereby, descriptive statistics, chi-squared tests, and binary logistic regression analyses were performed. Thirty-four survey questions related to the six dimensions of quality of care were selected as outcome variables. The adjusted regression models included four practice characteristics as covariates: practice type, being a teaching practice for GP trainees, multidisciplinarity of the team, and payment system. Results: Belgian practices made important organizational changes to deliver high-quality care during COVID-19. Most practices (n = 259; 56.1%) actively reached out to vulnerable patients. Limitations to the practice building or infrastructure threatened high-quality care in 266 practices (55.5%). Infection prevention measures could not always be implemented during COVID-19, such as using a cleaning protocol (n = 265; 57.2%) and providing a separate doctor bag for infection-related home visits (n = 130; 27.9%). Three hundred and sixty practices (82.0%) reported at least one safety incident related to a delayed care process in patients with an urgent condition. The adjusted regression analysis showed limited significant differences between the Belgian regions regarding the quality of care delivered. Belgian practices demonstrated varied performance compared to other European countries. For example, they excelled in always checking the feasibility of isolation at home but reported more patient safety incidents related to timely care than at least three-quarters of the other European countries. Conclusions: Future studies using different design methods are crucial to investigate which country and practice characteristics are associated with delivering high-quality care. [ABSTRACT FROM AUTHOR]

Background: Acute and late toxicities in patients treated with (chemo)radiotherapy for head and neck cancer (HNC) is common and can negatively impact quality of life and performance. Performance status instruments measure the functional ability to perform daily life activities and are important tools in the oncologic population. Aims: Since Dutch performance status scales for the HNC population are lacking, we conducted this study to translate the Performance Status Scale for Head and Neck Cancer Patients (PSS‐HN) into Dutch (D‐PSS‐HN) and to validate this version. Methods & Procedures: The D‐PSS‐HN was translated into Dutch according to the internationally described cross‐cultural adaptation process. It was administered to HNC patients and together with the Functional Oral Intake Scale completed by a speech and language pathologist at five different time points during the first 5 weeks of (chemo)radiotherapy. Patients were asked each time to complete the Functional Assessment of Cancer Therapy and the Swallowing Quality of Life Questionnaire. Pearson correlation coefficients were used to calculate convergent and discriminant validity and the evolution of D‐PSS‐HN scores was assessed by means of linear mixed models. Outcomes & Results: A total of 35 patients were recruited and > 98% of the clinician‐rated scales were completed. Convergent and discriminant validity were demonstrated, with all correlations rs between 0.467 and 0.819, and between 0.132 and 0.256, respectively. The subscales of the D‐PSS‐HN are sensitive to detect changes through time. Conclusion & Implications: The D‐PSS‐HN is a valid and reliable instrument to assess performance status in patients with HNC treated with (chemo)radiotherapy. It is a useful tool to measure HNC patients' current diet level and functional abilities to perform daily life activities. WHAT THIS PAPER ADDS: What is already known on the subject: Acute and late toxicities in patients treated with (chemo)radiotherapy for HNC are common and can negatively impact quality of life and performance. Performance status instruments measure the functional ability to perform daily life activities and are important tools in the oncologic population. However, Dutch performance status scales for the HNC population are lacking. Therefore, we translated the Performance Status Scale for Head and Neck Cancer Patients (PSS‐HN) into Dutch (D‐PSS‐HN) and validated this version. What this paper adds to existing knowledge: We translated the PSS‐HN and demonstrated its convergent and discriminant validity. The subscales of the D‐PSS‐HN are sensitive to detect changes through time. What are the potential or actual clinical implications of this work?: The D‐PSS‐HN is a useful tool to measure HNC patients' functional abilities to perform daily life activities. The tool can easily be used in clinical settings: since data collection duration is very short, this facilitates clinical (and research‐related) implementation of the scale. Patients' individual needs could be identified by using the D‐PSS‐HN, resulting in more appropriate approaches and (early) referrals if needed. Interdisciplinary communication could be facilitated. [ABSTRACT FROM AUTHOR]

Although people with a migration background (MB) have more unmet mental health needs than the general population, patients with a MB are still underrepresented in mental health care services. Provider bias towards these patients has been evidenced repeatedly but its driving factors remain elusive. We assessed the moderating effect of the individual (e.g. age and ethnicity), interpersonal (e.g. healthcare provider trust), and organisational (e.g. perceived workload) factors on general practitioners (GPs) differential decision-making regarding diagnosis, treatment, and referral for a depressed patient with or without a MB. An experimental study was carried out in which GPs were shown one of two video vignettes featuring adult male depressed patients, one with a MB and the other without. Belgian GPs (n = 797, response rate was 13%) had to decide on their diagnosis, treatment, and referral. Analysis of variance and logistic regression were used to analyse the effect of a MB, adding interaction terms for the explanatory variables. Overall, we found that there were ethnic differences in GPs' decisions regarding diagnosis and treatment recommendations. GPs perceived the symptoms of the patient with a MB as less severe (F = 7.68, p < 0.01) and demonstrated a reduced likelihood to prescribe a combination of medical and non-medical treatments (F = 11.55, p < 0.001). Those differences increased in accordance with the GP's age and perceived workload; at an interpersonal level, we found that differences increased when the GP thought the patient was exaggerating his distress. This paper showed that lower levels of trust among GPs' towards their migrant patients and high GP workloads contribute to an increased ethnic bias in medical decision-making. This may perpetuate ethnic inequalities in mental health care. Future researchers should develop an intervention to decrease the ethnic inequities in mental health care by addressing GPs' trust in their migrant and ethnic minority patients. [ABSTRACT FROM AUTHOR]

Research shows that older people tend to not only be underrepresented on television (TV), but also to be represented within a number of fixed types. These correspond to cultural myths about ageing, which emphasise vulnerability and decline but also increasingly stress the individual's responsibility for successful ageing. This paper analyses the representation of older people on Flemish public TV, using qualitative content analysis to identify patterns of representation in a sample of 44 programmes broadcast in 2019 and 2020, including the first months of the COVID-19 pandemic. To complement our own analysis, we also interviewed eight experts on ageing. Our research shows that representations of older people on Flemish public TV tend to gravitate towards two types related to different age groups: vulnerable and passive old-old people (over 80 years old), particularly those in nursing homes who feature prominently in reporting on the COVID-19 pandemic; and dynamic and active young-old people (65–80 years old), connected to the ideals of successful ageing. The two predominant types correspond to cultural myths about ageing and are also connected to recurrent themes: sexual intimacy, loneliness and death. Our research highlights the need for a more diverse representation, reflecting the variety of individual life conditions and the functional age of older people. [ABSTRACT FROM AUTHOR]

Background: Aphasia can affect the communication between the person with aphasia (PWA) and the communication partner (CP). It is therefore necessary to support both the PWA and their CPs. Communication partner training (CPT) focuses on training communication between dyads of whom one person has aphasia. Although there is increasing evidence supporting CPT as an effective intervention to improve communication and reduce the psychosocial consequences of stroke, implementation in clinical practice remains limited. Aim: To understand the mechanisms behind the practice–evidence gap currently hindering CPT implementation, this study investigated the role of (1) education, (2) concept knowledge, (3) work setting and (4) clinical experience in CPT. Methods & Procedures: Flemish speech and language therapists (SLTs) clinically involved in aphasia rehabilitation were surveyed online regarding CPT. Statistical analyses include descriptive statistics to report survey results and non‐parametric group comparisons to investigate the role of the four variables on CPT. Outcomes & Results: In this study 72 SLTs were included, of whom 73.61% indicated they deliver CPT but of whom only 43.10% indicated CP presence during therapy. The most frequently identified barriers to CPT delivery were lack of time and CPT‐specific knowledge. Other barriers were lack of resources, work setting dependent factors, PWA or CP dependent factors, individual therapy to the PWA being of higher priority, existing CPT methods and interventions being perceived as unclear and feeling uncertain about CPT delivery. Concerning the role of the four variables on CPT delivery, neither education nor concept knowledge had a significant effect on CPT delivery. Work setting and clinical experience did, however, influence CPT delivery. More specifically, CPT delivery and CP presence were higher in the private practice (chronic phase) compared to the other three settings and experienced SLTs deliver CPT more often compared with less experienced SLTs. Conclusions & Implications: To reduce the practice–evidence gap, we suggest prioritising the two most frequently identified barriers, that is, lack of time and CPT‐specific knowledge. To overcome the time barrier in CPT, we propose implementing automated natural speech analysis to reduce the workload. To enhance CPT‐specific knowledge, speech and language therapy curricula should provide more in‐depth theory and hands‐on practice for CPT. In addition, increased awareness about CPT‐specific methods is needed to further support clinical practice. WHAT THIS PAPER ADDS: What is already known on the subject: Communication partner training (CPT) is an effective intervention to improve communication and reduce the psychosocial consequences of stroke. Despite this evidence base, a current practice–evidence gap exists. What this study adds: This is the first study to characterise CPT delivery in a Flemish cohort of speech and language therapists (SLTs). In addition, on a more international perspective, few studies have investigated the role of education, concept knowledge, work setting and clinical experience in CPT. We found that neither education nor concept knowledge has a significant effect on CPT delivery. CPT delivery and communication partner presence are significantly higher in the private practice compared to the hospital, rehabilitation centre or nursing home settings. Experienced SLTs deliver CPT more often compared with less‐experienced SLTs. The two most prominent reported barriers include lack of time and CPT‐specific knowledge. What are the clinical implications of this work?: This study suggests reducing the practice–evidence gap by alleviating the main barriers identified, that is, lack of time and CPT‐specific knowledge. Time‐barriers can be addressed by implementing automated natural speech analyses. We additionally advocate for more in‐depth theory and hands‐on practice for CPT in speech and language therapy curricula. [ABSTRACT FROM AUTHOR]

The prevalence of Attention-Deficit/Hyperactivity Disorder (ADHD) diagnoses and medication use has increased over time around the world, but significant regional differences remain. This paper aims to determine and explain disparities in ADHD prevalence and medication use among school-aged children in two distinct school systems, in Flanders (Belgium) and Québec (Canada). We present detailed descriptive and comparative analyses of data from 35 schools, 114 teachers, and 1046 parents (children) that were collected as part of a comparative international project. The data concern teacher and parent suspicions, teachers' ratings of ADHD-related behaviors in children, teachers' views of medication use, and teachers' beliefs about ADHD. The results show that, compared with Flanders, Québec had significantly more children diagnosed with ADHD and more frequent suspicions of ADHD in children by teachers and parents. We refer to the conceptual, institutional, and interactional levels of medicalization to interpret our findings and conclude that social and cultural readings of children's behaviors differ greatly between regions. Medicalization of children's behaviors is more common in Québec than in Flanders. [ABSTRACT FROM AUTHOR]

Background: Assessing the speech production of multilingual children is challenging for speech‐language therapists (SLTs) around the world. Scientific recommendations to improve clinical practice are available, but their implementation has mostly been described in studies from English‐speaking countries. Aims: This survey aimed to describe the perspectives and practices of SLTs in assessing the speech production of multilingual children in French‐speaking Belgium. Methods & Procedures: An online survey was completed by 134 SLTs in French‐speaking Belgium. Outcomes & Results: SLTs predominantly used norm‐referenced assessment approaches, which are not recommended for use with multilingual children, and lacked necessary training and resources to implement recommended practices in the assessment of speech production of multilingual children. The shift towards more appropriate practices with multilingual children seems to be in its infancy among SLTs in French‐speaking Belgium. Some challenges identified by the SLTs were common to those in other countries and languages, such as the difficulty to distinguish between speech differences and speech disorders. Other challenges were specific to the French language and/or the Belgian context, such as the lack of appropriate tools in French. Conclusions & Implications: Action is required to improve clinical practice in assessing the speech production of multilingual children in French‐speaking contexts: better training for SLTs regarding linguistic diversity, more implementation research in the field of SLT, and advocacy for linguistic diversity with decision makers. What this paper adds: What is already known on this subject: Existing research indicates that assessing the speech production of multilingual children is challenging for speech‐language therapists (SLTs). Scientific recommendations for best practices have been published, and the shift to more appropriate assessment practices may be progressing differently across countries. SLTs' practices have been described in surveys, mostly conducted in English‐speaking countries. Although French is the fifth most spoken language in the world, data about SLTs' perspectives and practices in French‐speaking regions are scarce. What this study adds: The implementation of recommended practices in assessing multilingual children's speech production was limited among SLTs in French‐speaking Belgium. The norm‐referenced approach to assessment was predominant and few SLTs used recommended practices (e.g., criterion‐referenced measures, dynamic assessment, assessment of the child's speech production in the home language). Some challenges were identified that related specifically to practices in French‐speaking contexts (e.g., lack of French tools) and Belgian context (e.g., health policies unfavourable to multilingualism). These findings confirm that specific understanding of a situation is needed to develop context‐ and/or language‐specific solutions—and ultimately improve clinical practice. What are the clinical implications of this work?: SLTs in French‐speaking Belgium require specific training and support to provide appropriate assessment of speech production in multilingual children. Efforts to improve practices in French‐speaking contexts should focus on increasing understanding and consideration of cultural and linguistic diversity at all levels of the child's environment. Evidence‐based knowledge, assessment tools and multilingual resources are available to SLTs on websites in French and in English. [ABSTRACT FROM AUTHOR]

In clinical practice, many drug therapies are associated with prolongation of the QT interval. In literature, estimation of the risk of prescribing drug-induced QT prolongation is mainly executed by means of logistic regression; only one paper reported the use of machine learning techniques. In this paper, we compare the performance of both techniques on the same dataset. High risk for QT prolongation was defined as having a corrected QT interval (QTc) ≥ 450 ms or ≥ 470 ms for respectively male and female patients. Both conventional statistical methods (CSM) and machine learning techniques (MLT) were used. All algorithms were validated internally and with a hold-out dataset of respectively 512 and 102 drug-drug interactions with possible drug-induced QTc prolongation. MLT outperformed the best CSM in both internal and hold-out validation. Random forest and Adaboost classification performed best in the hold-out set with an equal harmonic mean of sensitivity and specificity (HMSS) of 81.2% and an equal accuracy of 82.4% in a hold-out dataset. Sensitivity and specificity were both high (respectively 75.6% and 87.7%). The most important features were baseline QTc value, C-reactive protein level, heart rate at baseline, age, calcium level, renal function, serum potassium level and the atrial fibrillation status. All CSM performed similarly with HMSS varying between 60.3% and 66.3%. The overall performance of logistic regression was 62.0%. MLT (bagging and boosting) outperform CSM in predicting drug-induced QTc prolongation. Additionally, 19.2% was gained in terms of performance by random forest and Adaboost classification compared to logistic regression (the most used technique in literature in estimating the risk for QTc prolongation). Future research should focus on testing the classification on fully external data, further exploring potential of other (new) machine and deep learning models and on generating data pipelines to automatically feed the data to the classifier used. [ABSTRACT FROM AUTHOR]

Background: Big data research requires public support. It has been argued that this can be achieved by public involvement and engagement to ensure that public views are at the centre of research projects. Researchers should aim to include diverse communities, including seldom‐heard voices, to ensure that a range of voices are heard and that research is meaningful to them. Objective: We explored how researchers involve and engage seldom‐heard communities around big data research. Methods: This is a qualitative study. Researchers who had experience of involving or engaging seldom‐heard communities in big data research were recruited. They were based in England (n = 5), Scotland (n = 4), Belgium (n = 2) and Canada (n = 1). Twelve semistructured interviews were conducted on Zoom. All interviews were audio‐recorded and transcribed, and we used reflexive thematic analysis to analyse participants' experiences. Results: The analysis highlighted the complexity of involving and engaging seldom‐heard communities around big data research. Four themes were developed to represent participants' experiences: (1) abstraction and complexity of big data, (2) one size does not fit all, (3) working in partnership and (4) empowering the public contribution. Conclusion: The study offers researchers a better understanding of how to involve and engage seldom‐heard communities in a meaningful way around big data research. There is no one right approach, with involvement and engagement activities required to be project‐specific and dependent on the public contributors, researchers' needs, resources and time available. Patient and Public Involvement: Two public contributors are authors of the paper and they were involved in the study design, analysis and writing. [ABSTRACT FROM AUTHOR]

This paper investigates different uses of the Journal Impact Factor (JIF) in national journal rankings and discusses the merits of supplementing metrics with expert assessment. Our focus is national journal rankings used as evidence to support decisions about the distribution of institutional funding or career advancement. The seven countries under comparison are China, Denmark, Finland, Italy, Norway, Poland, and Turkey—and the region of Flanders in Belgium. With the exception of Italy, top‐tier journals used in national rankings include those classified at the highest level, or according to tier, or points implemented. A total of 3,565 (75.8%) out of 4,701 unique top‐tier journals were identified as having a JIF, with 55.7% belonging to the first Journal Impact Factor quartile. Journal rankings in China, Flanders, Poland, and Turkey classify journals with a JIF as being top‐tier, but only when they are in the first quartile of the Average Journal Impact Factor Percentile. Journal rankings that result from expert assessment in Denmark, Finland, and Norway regularly classify journals as top‐tier outside the first quartile, particularly in the social sciences and humanities. We conclude that experts, when tasked with metric‐informed journal rankings, take into account quality dimensions that are not covered by JIFs. [ABSTRACT FROM AUTHOR]

The Feel4Diabetes project conducted a 2-year intervention aiming to encourage healthy behaviours in families in six European countries. Within this paper, the intervention effect was evaluated after the first intervention year on 24-hour physical behaviour composition in Belgian families at risk for type 2 diabetes. Parents' and children's levels of physical activity (PA) and sedentary behaviour (SB) were objectively measured and sleep duration was self-reported. Valid data were obtained in 82 children (mean age: 8.2 ± 0.84; 50.0% boys) and 72 parents (mean age: 40.1 ± 5.5; 27.8% fathers). Data were analysed using a compositional data approach, and mixed models were used to take clustering into account. Results showed that for children, the mean baseline composition of the 24-hour day in sleep, SB, light and moderate-to-vigorous PA for the intervention group was (11 hours 18 minutes; 6 hours 33 minutes; 5 hours 02 minutes, 1 hour 08 minutes) and for the control group (11 hours 18 minutes; 6 hours 35 minutes; 5 hours 04 minutes; 1 hour 06 minutes), respectively. For parents, the mean baseline composition was for the intervention group (8 hours 12 minutes; 9 hours 36 minutes; 5 hours 43 minutes; 27 minutes) and for the control group (8 hours 00 minute; 9 hours 00 minute; 6 hours 27 minutes; 33 minutes). No significant intervention effects were found on 24-hour physical behaviour composition of either parents or children (p = 0.19 and p = 0.21, respectively). A relatively small study population and a poor attendance rate among parents could maybe explain the lack of effectiveness. More effective strategies are needed to retain vulnerable families in interventions. Furthermore, future approaches to improve the 24-hour physical behaviour composition should maybe focus more specifically on PA, SB and sleep, and involve teachers, children and parents in the design of the intervention. Trial registration: NCT02393872 in ClinicalTrials.gov. [ABSTRACT FROM AUTHOR]

This qualitative study investigates through a realist evaluation how the work training programme of 10 community health workers (CHWs) contributed to culturally competent home care services. A European Social Fund project trained 10 jobseekers with migration backgrounds to become CHWs in Brussels (Belgium). Three research questions were formulated: (a) What increase in the cultural competence of the home care organisations can be identified at the end of the project? (b) How did the training contribute to this increase? (c) Which factors and preconditions made the positive outcomes of the training more likely? This study analysed 10 mid‐term interviews with individual CHWs in training and four focus groups at the end of the project with CHWs, care employees, trainers and project coordinators (N = 25). First, the results showed that the increase in cultural competence was located mostly on the surface structure of the organisation (e.g. adapting communication materials) and not in its deeper structure. Second, the principles of strengths‐based education proved to be important during the training (e.g. getting to know, recognise and address the competences and skills of the CHWs). Third, contextual factors at the micro‐level (e.g. interest in care and cultures), the exo‐level (e.g. management culture) and the macro‐level (e.g. policy regulations) could foster or hinder the process of increasing cultural competence. This paper concludes that although the project contributed to a shift in organisational culture towards cultural competence, it remains challenging to effect a similar shift in the deep structure of care organisations. [ABSTRACT FROM AUTHOR]

Because of a growing older population, the sexual health (SH) of older adults, including sexual violence (SV), is becoming an increasingly important public health concern. Yet, reliable SV prevalence rates and risk factors are lacking, due to methodological shortcomings in current studies. SV research involves challenges regarding safety and disclosure, especially in older adults. In this paper, we reflect on the methods used in a sexual health and violence (SH&V) study in older adults balancing between privacy rules imposed by the General Data Protection Regulation (GDPR) and ethical and safety guidelines. To ensure the acceptability of the questionnaire, it was tested in a two-phase pilot study. To maximize SV disclosure, the questionnaire built up gradually towards the more sensitive SV modules. Interviewers were trained to approach participants in a non-judgmental manner. Due to GDPR, our data collection method was changed from a random sampling via the National Register to a cluster random probability sampling with a random walk finding approach. Older adults were willing to discuss SH&V during a structured face-to-face interview with trained interviewers. Following strict safety guidelines, no major incidents were reported. The cluster random probability sampling with random walk finding approach provided an adequate sampling frame, but was inefficient and time-consuming. Doing research on SH&V in older adults is feasible but requires a substantial investment of time and the challenges involved may incur greater costs. In order to guarantee further research on sensitive topics in older adults, we recommend that an interdisciplinary expert group consisting of researchers, donors, and policymakers investigates how GDPR and public health research in hard-to-reach populations can be better matched. [ABSTRACT FROM AUTHOR]