Validity of self-reported diagnoses of gynaecological and breast cancers in a prospective cohort study: the Japan Nurses' Health Study.

ABSTRACT:

Objectives

To validate the self-reported diagnoses of gynaecological and breast cancers in a nationwide prospective cohort study of nursing professionals: the Japan Nurses' Health Study (JNHS).

Design and setting

Retrospective analysis of the JNHS.

Participants and measures

Data were reviewed for 15 717 subjects. The mean age at baseline was 41.6±8.3 years (median: 41), and the mean follow-up period was 10.5±3.8 years (median: 12). Participants are regularly mailed a follow-up questionnaire once every 2 years. Respondents who self-reported a positive cancer diagnosis were sent an additional confirmation questionnaire and contacted the diagnosing facility to confirm the diagnosis based on medical records. A review panel of experts verified the disease status. Regular f

SUBMITTER: Takamatsu K 

PROVIDER: S-EPMC8215237 | biostudies-literature | 2021 Jun

REPOSITORIES: biostudies-literature