Completion rates in health-related quality-of-life assessment: approach of the National Cancer Institute of Canada Clinical Trials Group

摘要: The approach of the National Cancer Institute Canada Clinical Trials Group to measuring compliance, that is, completion rates, for health-related quality life questionnaires is presented. Completion rates can be measured at institutional, patient, questionnaire and item levels baseline, on-treatment off-treatment follow-up study periods. Time windows are defined each expected time. In seven completed clinical trials, were high with more than 93 per cent patients completing in specified time baseline while on-treatment. rate on still acceptable 85 cent. proportions analysable 97.6 cent, 82.0 77.0 respectively, three Item within 95.5 or more. variables most likely influence breast cancer, ovarian metastases centre size.