Healthy diets positively associated with health-related quality of life in children and adolescents from low socioeconomic areas: Findings from the Greek Food Aid Program, DIATROFI.

OBJECTIVES: To assess the relationship of diet with health-related quality of life (HRQoL) in vulnerable children and adolescents. METHODS: Data included 6583 children and adolescents (aged 3-18 years old) from the Greek Food-Aid DIATROFI Program in the 2015 to 2016 and 2017 to 2018 school years. HRQoL was measured with the Pediatric Quality of Life Inventory questionnaire and diet with food frequency questionnaires. The healthy plant-based diet index (hPDI), animal score, and dietary patterns were investigated. RESULTS: The hPDI and animal score were associated with good HRQoL (odds ratio [OR] [95% confidence interval], 10-unit increase: ORhPDI = 1.28 [1.05, 1.57], ORanimal = 1.51 [1.14, 2.00]) and physical (ORanimal = 1.62 [1.23, 2.13]), emotional (ORhPDI = 1.30 [1.07, 1.58], ORanimal = 1.41 [1.08, 1.85]) and school function (ORhPDI = 1.32 [1.09, 1.59], ORanimal = 1.46 [1.12, 1.89]). Dietary patterns of fruits, raw vegetables, and cheese were associated with good HRQoL (OR of 1-unit increase: 1.22 [1.13, 1.32]), and physical OR = 1.18 [1.09, 1.27]) and emotional function (OR = 1.09 [1.02, 1.18]). Starchy foods and sweetened beverages were associated with poor HRQoL (OR = 0.75 [0.63, 0.90]), and emotional (OR = 0.80 [0.68, 0.95]) and school function (OR = 0.72 [0.61, 0.85]). CONCLUSION: Healthy diets and dietary patterns were positively associated with the HRQoL of vulnerable children and adolescents, which may offer opportunities for prevention.

Gut feelings: the relations between depression, anxiety, psychotropic drugs and the gut microbiome.

The gut microbiome is involved in the bi-directional relationship of the gut - brain axis. As most studies of this relationship are small and do not account for use of psychotropic drugs (PTDs), we explored the relations of the gut microbiome with several internalizing disorders, while adjusting for PTDs and other relevant medications, in 7,656 Lifelines participants from the Northern Netherlands (5,522 controls and 491 participants with at least one internalizing disorder). Disorders included dysthymia, major depressive disorder (MDD), any depressive disorder (AnyDep: dysthymia or MDD), generalized anxiety disorder (GAD) and any anxiety disorder (AnyAnx: GAD, social phobia and panic disorder). Compared to controls, 17 species were associated with depressive disorders and 3 were associated with anxiety disorders. Around 90% of these associations remained significant (FDR <0.05) after adjustment for PTD use, suggesting that the disorders, not PTD use, drove these associations. Negative associations were observed for the butyrate-producing bacteria Ruminococcus bromii in participants with AnyDep and for Bifidobacterium bifidum in AnyAnx participants, along with many others. Tryptophan and glutamate synthesis modules and the 3,4-Dihydroxyphenylacetic acid synthesis module (related to dopamine metabolism) were negatively associated with MDD and/or dysthymia. After additional adjustment for functional gastrointestinal disorders and irritable bowel syndrome, these relations remained either statistically (FDR <0.05) or nominally (P < 0.05) significant. Overall, multiple bacterial species and functional modules were associated with internalizing disorders, including gut - brain relevant components, while associations to PTD use were moderate. These findings suggest that internalizing disorders rather than PTDs are associated with gut microbiome differences relative to controls.

Evidence-based practice in well-child care.

Evidence-based practice (EBP) significantly improves the quality of healthcare, but its use in community pediatrics has not yet been proven. We aimed to assess how Dutch community pediatricians use scientific findings and apply evidence-based practice in everyday well-child care. We interviewed a purposive sample of 14 community pediatricians in the Netherlands regarding their professional activities in daily practice, focusing on instances in which their professional knowledge was insufficient to address the issue at hand. We transcribed the interviews verbatim, and coded them using ATLAS.ti software. We structured the information using template analysis. Community pediatricians relied largely on guidelines of their own profession. If these were not sufficient, they first consulted other medical specialists or colleagues, or used different sources that they considered reliable. They only rarely performed an EBP search, and if so, only for somatic problems. For psychosocial problems, they used a strategy of extensive interaction with clients and members of multidisciplinary teams. We identified five barriers to performing an EBP search: (1) a conviction that not every community pediatrician needs to be able to perform an EBP search; (2) a conviction that an EBP search is not suitable for psychosocial problems; (3) lack of confidence in one's own abilities to perform an EBP search; (4) limited access to literature; (5) lack of time. CONCLUSIONS: Community pediatricians rely on professional guidelines; this indicates a need to keep these up-to-date and user-friendly. Furthermore, pediatricians should be better trained in performing EBP searches, and in working in multidisciplinary teams, especially for psychosocial problems. WHAT IS KNOWN: • Conducting an evidence-based practice search is considered indispensable to determine the best management of the patient's problem. • Conducting such a search is still considered challenging in many medical disciplines, including pediatrics. WHAT IS NEW: • There is a need to strengthen skills of community pediatricians to find evidence on psychosocial problems and to present this effectively in multidisciplinary teams. • The pediatricians' broad use of other sources of evidence, like experts and online sources, shows the importance of critical evaluation skills.

Investigating the use of support in secondary school: the role of self-reliance and stigma towards help-seeking.

Purpose: Adolescents are the least likely to seek help for their mental health problems. School may be an important route to improve early recognition of adolescents with mental health problems in need for support, but little is known about the barriers to school support.Materials and methods: Data were collected in a longitudinal cohort study of Dutch adolescents (age 12-16) in secondary school (n = 956). We assessed the relation between level of psychosocial problems at the beginning of the school year (T1) and the support used in school at the end of that school year (T2), whether the willingness to talk to others (measured at T1) mediates this relation, and whether stigma towards help-seeking (T1) moderates this mediation.Results: Adolescents with more psychosocial problems were more likely to use support in school and were less willing to talk to others about their problems, but the willingness to talk to others was not a mediator. Stigma moderated the relationship between psychosocial problems and willingness to talk to others.Conclusions: Most adolescents with psychosocial problems get support in Dutch secondary school regardless of their willingness to talk to others about their problems. However, perceiving stigma towards help-seeking makes it less likely for someone to talk about their problems.

[Experience of first COVID-19 patients in Northern part of the Netherlands: Information provision, source investigation, contact tracing and home isolation]. / Eerste covid-19-patiënten in Noord-Nederland.

OBJECTIVE: The aim of this study was to investigate how patients experience the information, the source investigation and contact tracing and the measures in isolation at the start of a pandemic. DESIGN: Secondary analysis of semi-structured interviews was conducted as part of a larger exploratory mixed-methods study on COVID-19 patient experiences. METHODS: Semi-structured interviews were conducted with 29 people from Friesland and Groningen who tested positive for SARS-CoV-2 between 9 March and 3 April 2020, recruited via maximum variation sampling. Thematic analysis was used. RESULTS: The following themes emerged from the analysis: 1) Information: Conflicting information by different advisors led to a lack of clarity. Patients admitted to hospital usually felt uninformed about the rules of home isolation after discharge. 2) Investigation into the source of infection: For most it was unclear whether and how this investigation took place. Some expected feedback on their suggestions. 3) Informing contacts: Not everyone felt able to inform the right contacts. Some felt stigmatized. 4) Living with the measures in home isolation: The recommended living rules were often not fully applied. Some patients felt insufficiently supported. CONCLUSION: Our study shows that not all COVID-19 patients felt well cared for at the start of the outbreak. Scaling down monitoring by the public health service can mean that questions about source and contact investigation and isolation remain unanswered or are answered by others. This leads to conflicting information and non-compliance with measures. The supervision of patients in isolation should be better guarded.

Multimorbidity prevalence and patterns and their associations with health literacy among chronic kidney disease patients.

BACKGROUND: Health literacy is the ability to deal with information related to one's health. Patients with low health literacy have poor disease-management skills for chronic diseases, such as chronic kidney disease (CKD). This could influence the number and combination of their diseases. METHODS: We included adult patients with CKD stages 1-5 from the Lifelines Study (n = 2,742). We assessed the association between low health literacy and the number and patterns of comorbidities, considering them globally and stratified by age and sex, using multinomial logistic regression and latent class analysis, respectively. RESULTS: Low health literacy was associated with a higher number of comorbidities in the crude models, and after adjustment for age, sex, eGFR, smoking, and BMI. In the crude model, the OR for low health literacy increased from 1.71 (1.25-2.33) for two comorbidities to 2.71 (2.00-3.68) for four comorbidities. In the fully-adjusted model, the associations remained significant with a maximum OR of 1.70 (1.16-2.49) for four comorbidities. The patterns of multimorbidity were similar for low and adequate health literacy, overall and by sex, bur tended to be different for patients older than 65. Older patients with low health literacy had higher comorbidity prevalence and a relatively greater share of cardiovascular, psychiatric, and central nervous system diseases. CONCLUSIONS: Among CKD patients, low health literacy is associated with more multimorbidity. Health literacy is not associated with patterns of multimorbidity in younger patients, but a difference was observed in older ones. Improving low health literacy could be an intervention efficient also in decreasing multimorbidity in CKD patients.

[COVID-19: recovering at home is not easy]. / Covid-19: thuis uitzieken valt niet mee.

OBJECTIVE: To gain insight into 1) the symptoms and the disease process of healthcare professionals (HCPs) who tested positive for COVID-19 and were not hospitalized because of mild symptoms, 2) the impact on their psychological well-being and 3) the experiences with (after) care and infection prevention measures. DESIGN: Explorative mixed-methods study. METHOD: The municipal public health services of Groningen and Fryslân invited all HCPs aged above 18 years who tested positive for COVID-19 between March 18th and April 3rd 2020 to fill out an online questionnaire (n = 109), on average one month after diagnosis. 18 HCPs participated in telephone interviews. RESULTS: Almost all HCPs mentioned fatigue as a long-term symptom, less frequently mentioned were, among other things, feeling physically weak and having a cold. Nearly half of them did not have a fever, two-thirds experienced stress. HCPs with comorbidity had more symptoms. The interviews showed that stress in particular occurred in families with children and because of uncertainty about the duration of infectiousness, with lack of good (after)care. Respondents experienced many negative reactions of people in their environment that felt stigmatizing. The isolation at home was considered bearable. CONCLUSION: A COVID-19 infection has a significant impact on physical and mental health, even in HCPs with mild symptoms. Persistent fatigue in particular hinders patients' functioning. The absence of fever in almost half of the respondents is remarkable, as well as the negative impact on psychological well-being. HCPs are also dissatisfied with after-care. Infection prevention measures were relatively well-adhered too.

[Impact of the corona lockdown on daily oral health care behaviour of young children]. / Impact van corona-lockdown op het dagelijks mondgezondheidsgedrag van jonge kinderen.

This study explores the possible effects of the current corona pandemic and the ensuing measures on parental oral care behaviour, particularly during the lockdown period. Moreover, this study examines to what extent these effects differ according to the educational level of the parents. In total, 120 parents of children aged 4-5 years completed a digital questionnaire about parental oral care behaviour. The results show that during the coronavirus lockdown, 26% of parents skipped toothbrushing more often in the morning, 44% let their child snack more often, and 22% let their child drink sweetened drinks more often. In addition, parents with a high educational level skipped tooth brushing in the morning more often than parents with a low educational level. In contrast, parents with a low educational level skipped toothbrushing more often in the evening than parents with a high educational level. The results of this small study suggest that the coronavirus lockdown affected parental oral care behaviour.

[Responsible use of screens: recommendations to limit myopia in children and young people]. / Verantwoord beeldschermgebruik.

The excessive use of screens is a contemporary problem that can have a number of effects on health. It is of particular influence on the onset and exacerbation of myopia, and for these reasons a group of professionals decided to draw up recommendations on a more sensible use of screens. The group comprised an ophthalmologist-epidemiologist, an orthoptist, paediatric and adolescent physicians, a youth health care nurse, an orthopaedic surgeon, a movement therapist-epidemiologist, health scientists and psychologists. They recommend that on history-taking, standard questions concerning screen use and its associated problems should be asked. The parents can then be given targeted lifestyle advice for the child, i.e. after 20-30 minutes continuous screen use there should be a change of activity, and that the child should spend 2 hours a day outdoors. These recommendations will promote the health of children's eyes as well as their general development.

The role of functional health literacy in long-term treatment outcomes in psychosocial care for adolescents.

Although among adolescents with psychosocial problems low health literacy may increase the risk of poor treatment outcomes, the contributing mechanisms within treatment remain unclear. A better understanding of these mechanisms could contribute to improved treatment processes and outcomes. This study aims to examine the relationship between functional health literacy, treatment processes (treatment adherence, learning processes), and treatment outcome (level of psychosocial problems) in adolescents in psychosocial care. We used data from a prospective cohort study among adolescents aged 12-18 (N = 390), collected in four successive measurements: at entry into care, and 3, 12, and 24 months thereafter. We used a mixed effect model to investigate the association between level of functional health literacy (adequate vs. inadequate) and treatment processes (treatment adherence, learning processes) and treatment outcome (level of psychosocial problems). Between adolescents with adequate and inadequate functional health literacy, we found no differences or change over time in adherence or learning processes. The level of psychosocial problems significantly declined over time (ß = - 1.70, 95% CI [- 2.72, - 0.69], p = .001) to a similar degree in both groups, though, in all measurements, the level was consistently higher for adolescents with inadequate health literacy. We conclude that health literacy levels did not affect change in treatment processes nor in outcomes of psychosocial treatment. However, the consistently higher level of psychosocial problems among adolescents with inadequate health literacy suggests an unaddressed need in psychosocial care.

Developmental Pathways from Genetic, Prenatal, Parenting and Emotional/Behavioral Risk to Cortisol Reactivity and Adolescent Substance Use: A TRAILS Study.

Cortisol reactivity is a frequently studied biomarker of substance use, though infrequently examined in adolescence. However, past research provides evidence that multiple developmental influences, including genetics and both prenatal and postnatal environmental influences, contribute both to cortisol reactivity and adolescent substance use. The aim of this study was to assess the impact of these earlier developmental influences on cortisol reactivity to a social stress challenge and adolescent substance use (smoking, alcohol, and marijuana use frequency assessed at age 16 years), using data from the TRacking Adolescents' Individual Lives Survey (TRAILS; N= 2230 adolescents, 51% female). Developmental pathways included polygenic risk, prenatal stress, warm parenting (age 11), and internalizing and externalizing problems (intercepts and change from 11-16 years). Cortisol reactivity was associated with smoking but not alcohol or marijuana use. Externalizing problems were the stronger predictor of adolescent substance use, but internalizing problems also had an important role. Prenatal stress and middle childhood parenting operated via middle childhood externalizing problems, and parenting also operated via trajectories of growth of externalizing problems in predicting adolescent substance use outcomes. Further, there were protective effects of internalizing problems for alcohol and marijuana use in the context of a more comprehensive model. These developmental influences did not attenuate the association of cortisol reactivity and smoking. These findings suggest a need to understand the broader developmental context regarding the impact of internalizing pathways to substance use, and that it is unlikely that cortisol reactivity and smoking are associated solely because of common developmental influences.

[More attention for prevention, primary health care and public health; en route to research that makes you better]. / Meer aandacht voor preventie, eerstelijnszorg en public health; sterker op weg naar onderzoek waarvan je beter wordt.

An effective approach to health problems and a sustainable health care system requires more attention to prevention, primary health care and public health in research. For this to be achieved, university medical centres (UMCs) should strengthen the academic basis of prevention and primary care, as the Dutch Health Council recommended in its report 'Research that matters'. We are now three years on and the NFU, the association of the UMCs, recently published its plan 'Research and innovation with and for the healthy region'. This is a step in the right direction, but we are not there yet.

Beyond not bad or just okay: social predictors of young adults' wellbeing and functioning (a TRAILS study).

BACKGROUND: Various childhood social experiences have been reported to predict adult outcomes. However, it is unclear how different social contexts may influence each other's effects in the long run. This study examined the joint contribution of adolescent family and peer experiences to young adult wellbeing and functioning. METHODS: Participants came from the TRacking Adolescents' Individual Lives Survey (TRAILS) study (n = 2230). We measured family and peer relations at ages 11 and 16 (i.e. family functioning, perceived parenting, peer status, peer relationship quality), and functioning as the combination of subjective wellbeing, physical and mental health, and socio-academic functioning at age 22. Using structural equation modelling, overall functioning was indicated by two latent variables for positive and negative functioning. Positive, negative and overall functioning at young adulthood were regressed on adolescent family experiences, peer experiences and interactions between the two. RESULTS: Family experiences during early and mid-adolescence were most predictive for later functioning; peer experiences did not independently predict functioning. Interactions between family and peer experiences showed that both protective and risk factors can have context-dependent effects, being exacerbated or overshadowed by negative experiences or buffered by positive experiences in other contexts. Overall the effect sizes were modest at best. CONCLUSIONS: Adolescent family relations as well as the interplay with peer experiences predict young adult functioning. This emphasizes the importance of considering the relative effects of one context in relation to the other.

[Pain reduction during vaccination of young children]. / Pijnreductie bij vaccinatie van jonge kinderen.

- Children have the right to pain mitigation during vaccination.- There are several simple, non-costly and safe interventions to effectively reduce pain during vaccination.- To improve the Dutch vaccination praxis, it is essential to train professionals in the use of these interventions.- Using the vaccination technique described in the guideline of the Dutch National Immunisation Programme results in pain reduction.- As a pain-reducing intervention at every vaccination procedure, the healthcare professional can give the child and parents a feeling of being in control by explaining about the vaccination procedure, pain and pain reduction and by vaccinating in calm, low-stimulus surroundings.- Other effective interventions include distracting the child, having it sit in the lap of a parent, giving it something to suck on, feeding it or having it drink a sugary solution, and using a topical anaesthetic cream. The healthcare professional should implement these interventions in consultation with, and attuned to, both the child and its parents.

[Embrace, integrated primary care for older adults]. / SamenOud, geïntegreerde ouderenzorg in de eerste lijn.

OBJECTIVE: To examine the impact of Embrace (Dutch: SamenOud), a new primary care model for community-living people aged over 75 years on perceived quality of care. DESIGN: Randomized controlled trial in 15 general practices in the East Groningen region of the Netherlands. METHOD: In the period January 2012-March 2013, 1456 general practice patients aged 75 years and older were stratified on the basis of self-reporting into 3 risk profiles: 'robust', 'frail' and 'complex care needs', and then randomized to the intervention or the control arm. Intervention consisted of care and support from an elderly-care team consisting of a specialist in Gerontology, a district nurse, and a social worker. Intensity and duration of the care and support were dependent on risk profile. The primary outcome measure was quality of care as reported by participants; the secondary outcome measure was the extent of implementation as reported by the caregivers. RESULTS: The level of perceived quality of care after 12 months was slightly higher in the intervention arm than in the control arm, but the effect size was quite small. The difference was significant in elderly people with the risk profiles 'frail' and 'complex care needs'; robust elderly people did not experience a significant difference. The caregivers reported increased implementation of integrated care (effect size 0.71, that means average). CONCLUSION: Embrace slightly improved the perceived quality of care, particularly for elderly people with complex care needs for whom case management was organised. Caregivers judged implementation of integrated care to be greatly improved, though there was still room for further improvement. Further research should be carried out into the effectiveness of integrated primary care for the elderly on health, service-use and healthcare costs.

Functional outcomes of child and adolescent mental disorders. Current disorder most important but psychiatric history matters as well.

BACKGROUND: Various sources indicate that mental disorders are the leading contributor to the burden of disease among youth. An important determinant of functioning is current mental health status. This study investigated whether psychiatric history has additional predictive power when predicting individual differences in functional outcomes. METHOD: We used data from the Dutch TRAILS study in which 1778 youths were followed from pre-adolescence into young adulthood (retention 80%). Of those, 1584 youths were successfully interviewed, at age 19, using the World Health Organization Composite International Diagnostic Interview (CIDI 3.0) to assess current and past CIDI-DSM-IV mental disorders. Four outcome domains were assessed at the same time: economic (e.g. academic achievement, social benefits, financial difficulties), social (early motherhood, interpersonal conflicts, antisocial behavior), psychological (e.g. suicidality, subjective well-being, loneliness), and health behavior (e.g. smoking, problematic alcohol, cannabis use). RESULTS: Out of the 19 outcomes, 14 were predicted by both current and past disorders, three only by past disorders (receiving social benefits, psychiatric hospitalization, adolescent motherhood), and two only by current disorder (absenteeism, obesity). Which type of disorders was most important depended on the outcome. Adjusted for current disorder, past internalizing disorders predicted in particular psychological outcomes while externalizing disorders predicted in particular health behavior outcomes. Economic and social outcomes were predicted by a history of co-morbidity of internalizing and externalizing disorder. The risk of problematic cannabis use and alcohol consumption dropped with a history of internalizing disorder. CONCLUSION: To understand current functioning, it is necessary to examine both current and past psychiatric status.

[Lifestyle and psychosocial health in Dutch adolescents: an additional point of contact in Dutch Preventive Child Healthcare]. / Leefstijl en psychosociale gezondheid bij adolescenten: een extra contactmoment in de jeugdgezondheidszorg.

OBJECTIVE: This study aims to give an overview of the type, prevalence and accumulation of risk behaviours and psychosocial health problems in Dutch adolescents, and of potential interventions directed at dealing with them. DESIGN: Cross-sectional analyses of data from a cohort study, and literature review. METHOD: We used data from the prospective TRacking Adolescents' Individual Lives Survey (TRAILS) study (n=2230) and computed prevalences of risk behaviours and psychosocial health problems at the ages of 13 and 16 years. We assessed the evidence for effectiveness of preventive interventions in systematic reviews. RESULTS: Risk behaviours like insufficient consumption of fruit and vegetables and skipping breakfast were common among adolescents. Between 13 to 16 years the prevalence of overweight increased from 11.0% to 15.0%. The lifetime prevalence of smoking among the young people increased from 36.3% to 55.7% and of use of alcohol from 74.0% to 92.3%. Most risk behaviour prevalences were higher among adolescents with a lower educational level and those with two low-educated parents. These adolescents more commonly also had > 5 risk behaviours or psychosocial problems. The prevalence of depressive symptoms increased from 5.5% in 13-year-olds to 8.4% in 16-year-olds. The literature review showed that collective interventions, whether multifaceted or otherwise, may be particularly effective in the prevention of a high-risk lifestyle and overweight. Both indicated and collective prevention were effective for dealing with psychosocial problems. CONCLUSION: Both prevalence and accumulation of risk behaviours and psychosocial health problems increase during adolescence. The risks of these are higher in young people with lower levels of education. Appropriate monitoring is particularly important in this group.

Mental health in Dutch adolescents: a TRAILS report on prevalence, severity, age of onset, continuity and co-morbidity of DSM disorders.

BACKGROUND: With psychopathology rising during adolescence and evidence suggesting that adult mental health burden is often due to disorders beginning in youth, it is important to investigate the epidemiology of adolescent mental disorders. METHOD: We analysed data gathered at ages 11 (baseline) and 19 years from the population-based Dutch TRacking Adolescents' Individual Lives Survey (TRAILS) study. At baseline we administered the Achenbach measures (Child Behavior Checklist, Youth Self-Report) and at age 19 years the World Health Organization's Composite International Diagnostic Interview version 3.0 (CIDI 3.0) to 1584 youths. RESULTS: Lifetime, 12-month and 30-day prevalences of any CIDI-DSM-IV disorder were 45, 31 and 15%, respectively. Half were severe. Anxiety disorders were the most common but the least severe whereas mood and behaviour disorders were less prevalent but more severe. Disorders persisted, mostly by recurrence in mood disorders and chronicity in anxiety disorders. Median onset age varied substantially across disorders. Having one disorder increased subjects' risk of developing another disorder. We found substantial homotypic and heterotypic continuity. Baseline problems predicted the development of diagnosable disorders in adolescence. Non-intact families and low maternal education predicted externalizing disorders. Most morbidity concentrated in 5-10% of the sample, experiencing 34-55% of all severe lifetime disorders. CONCLUSIONS: At late adolescence, 22% of youths have experienced a severe episode and 23% only mild episodes. This psychopathology is rather persistent, mostly due to recurrence, showing both monotypic and heterotypic continuity, with family context affecting particularly externalizing disorders. High problem levels at age 11 years are modest precursors of incident adolescent disorders. The burden of mental illness concentrates in 5-10% of the adolescent population.

[Re-use of medical data for research. What do the Dutch think of the requirement for explicit consent?]. / Hergebruik van medische gegevens voor onderzoek. Wat vindt de Nederlander van het toestemmingsvereiste?

OBJECTIVE: How do healthcare consumers perceive the use of medical data for scientific research, within the framework of protection of their personal data? DESIGN: Survey among 731 members of the Healthcare Consumer Panel of the Netherlands Institute for Health Services Research (NIVEL). METHOD: A written and online questionnaire was used, consisting of general questions and 4 cases per respondent. The questions concerned the degree of trust respondents have in the use of previously registered data for different kinds of healthcare research, and their willingness to make data available under various conditions without being asked for explicit consent. RESULTS: Respondents showed a high degree of trust in scientific researchers and physicians concerning the re-use of medical data for research. A majority agreed that it is not necessary to be explicitly asked for consent for this kind of research, providing they are informed: one-third found their autonomy in being able to decide to be more important than scientific progress; three-quarters found explicit permission unnecessary as long as the data is well-protected and only used for scientific research. CONCLUSION: Data protection in research should be proportional to the risks of misuse and the benefits of the use of the data for research. A large majority of healthcare users trust the researchers, and the existing codes of conduct protect data sufficiently. Therefore, we see no need for stricter requirements for the use of health data, which would unnecessarily limit healthcare research. We do consider greater transparency about the research process to be necessary, in order to maintain a proper balance between personal-data protection and the need to emphasise the necessity for learning in the healthcare system.