Informed consent: study of quality of information given to participants in a clinical trial.
OBJECTIVE
To determine whether the participants in a clinical trial had perceived adequate information about the trial according to the guidelines of the Declaration of Helsinki.


METHODS
About 18 months after the end of a gynaecological clinical trial the participants received a questionnaire by post, which focused on the quality of the information given to them before entering the trial. Neither researchers nor participants were aware in advance that the trial would become the subject of this follow up investigation.


METHODS
Eight different centres in Sweden.


METHODS
43 women out of the 53 who completed the trial (mean (range) age 23 (16 to 35) years) returned the questionnaire.


METHODS
Adequacy of the information (based on requirements of the Declaration of Helsinki) to enable the following: understanding of the aims of the study; awareness of what participation meant; and awareness of the possibility of withdrawing from participation at any time. Motives for agreeing to participate, and a subjective evaluation of the given information were also recorded.


RESULTS
All but one of the participants had been aware that they were taking part in a research project. Five women stated that they had not been aware that a second laparoscopy was performed only for research reasons. Seven women reported that they had not been aware of the meaning of participating in the project and 17 that they had had no information about the possibility of withdrawing from the study whenever they wanted. In the subjective rating 22 women considered the information given as good or very good. There was a systematic variation in the quality of the given information among the eight centres.


CONCLUSIONS
Although all but one of the participants had been aware that they were taking part in a clinical trial, the quality of the information understood and recalled by participants varied, and in many cases clearly did not meet the guidelines of the Declaration of Helsinki. Variations among centres in participants' perception of information suggest that deficiencies in perception may be caused by informers rather than the participants.
Lynöe
N
N
Department of Social Medicine, University of Umeå, Sweden.
Sandlund
M
M
Dahlqvist
G
G
Jacobsson
L
L
D002986:Clinical Trials as Topic / Q000592:standards*; D003142:Communication; D032882:Comprehension; D035061:Control Groups; D030881:Disclosure; D004992:Ethics, Medical; D005260:Female; D006805:Human Experimentation; D006801:Humans; D007258:Informed Consent; D009042:Motivation; D010353:Patient Education as Topic; D010817:Physician-Patient Relations; D035842:Research Subjects; D012488:Salpingitis / Q000188:drug therapy