Split views among parents regarding children's right to decide about participation in research: a questionnaire survey.

Based on extensive questionnaire data, this paper focuses on parents' views about children's right to decide about participation in research. The data originates from 4000 families participating in a longitudinal prospective screening as 1997. Although current regulations and recommendations underline that children should have influence over their participation, many parents in this study disagree. Most (66%) were positive providing information to the child about relevant aspects of the study. However, responding parents were split about whether or not children should at some point be allowed decisional authority when participating in research: 41.6% of the parents reported being against or unsure. Those who responded positively believed that children should be allowed to decide about blood-sampling procedures (70%), but to a less extent about participation (48.5%), analyses of samples (19.7%) and biological bank storage (15.4%). That as many as possible should remain in the study, and that children do not have the competence to understand the consequences for research was strongly stressed by respondents who do not think children should have a right to decide. When asked what interests they consider most important in paediatric research, child autonomy and decision-making was ranked lowest. We discuss the implications of these findings.

Self-assessed understanding as a tool for evaluating consent: reflections on a longitudinal study.

Based on extensive clinical questionnaire data, this paper explores the relation between research subjects' self-assessed understanding and actual knowledge of a large-scale predictive screening study, and its implications for the proper handling of information and consent routines in longitudinal studies. The initial data show that low self-assessed understanding among participants was correlated with limited knowledge, concern over participation and collected samples, less satisfaction with information, and feeling passive or negative towards the study. Among those reporting high understanding, a non-negligible number displayed a lack of knowledge regarding central aspects of the study. Regarding high assessed understanding, the multivariate analysis identified the main predictor variables to be knowledge, having a positive attitude towards participation and the study itself, being satisfied with information, having a stable psychosocial background and feeling calm regarding the handling of samples. These findings indicate that to evaluate participants' understanding through self-assessment may not be reliable method. Self-assessed understanding may rather be a good indicator of general attitudes than a tool for analysing content. The data also show that actual understanding varies considerably among participants, suggesting that more effort needs to be put into adjusting the information to the needs of different subgroups. It is argued that when doing this, researchers in longitudinal studies must be careful not to exhaust participants with excessive information that they do not want and that may cause them to drop out. The ethical relevance of obtaining repeated consents in longitudinal research is discussed.

Views on data use, confidentiality and consent in a predictive screening involving children.

Data from the 5-6 year control questionnaire of the ABIS study, a Swedish prospective screening of children for Type 1 diabetes, indicates a genuine trust in the researchers--very few participating families expressed concern about their participation. Nevertheless, a majority do not want their research data to be used beyond the agreement of the original consent. They want to be asked for renewed consent in such cases. A vast majority also want potential high-risk information about their child to be communicated to them. Most participating families want this regardless of whether any preventive treatment is available. Although potential benefits for their child is a motivation for participation for a majority of the respondents, they also claim to be motivated by altruistic reasons. These results are compared to results from two similar studies in the UK.