Compliance with quality of life data collection in the National Surgical Adjuvant Breast and Bowel Project (NSABP) Breast Cancer Prevention Trial

Stat Med. 1998 Mar 15-Apr 15;17(5-7):613-22. doi: 10.1002/(sici)1097-0258(19980315/15)17:5/7<613::aid-sim808>;2-9.


This paper describes compliance with the completion of a quality of life questionnaire in the Breast Cancer Prevention Trial, a large multi-centre randomized trial that is studying the efficacy of Tamoxifen in preventing breast cancer. In the first 4875 women enrolled in the control arm of the study, there was a very high rate of questionnaire completion at baseline, 3 months, 6 months and 12 months of follow-up (89.8 per cent completed forms at 12 months). The sample was examined according to demographic and risk factors, as well as by recruitment cohort. There was a significantly poorer compliance rate for the most recently recruited cohort that was followed-up during a time of substantial external negative publicity related to clinical trial research. Nevertheless, the overall compliance with completion of quality of life data in this trial is very high, which is probably attributable to the high educational status of the trial participants.

MeSH terms

  • Adult
  • Aged
  • Antineoplastic Agents, Hormonal / therapeutic use
  • Breast Neoplasms / prevention & control
  • Breast Neoplasms / psychology*
  • Canada
  • Clinical Trials as Topic / methods*
  • Data Collection / methods*
  • Female
  • Humans
  • Middle Aged
  • Multicenter Studies as Topic
  • Patient Compliance
  • Quality of Life*
  • Research Design*
  • Socioeconomic Factors
  • Surveys and Questionnaires
  • Tamoxifen / therapeutic use
  • United States


  • Antineoplastic Agents, Hormonal
  • Tamoxifen