Validation of Identifying Cancer Diagnosis Based on Self-Reported Information in the Japan Nurses’ Health Study

• DOI: 10.31557/apjcp.2022.23.2.651
• Publication Date: 2022-02-28T15:01:22Z
• Authors: Kota Katanoda; Yuki Ideno; Naho Maruoka; Kazue Nagai; Yoichiro Tsukada; Mei Matsuki; Takahiro Higashi; Kunihiko Hayashi
• Keywords: Stomach cancer; Gold standard (test)

The Japan Nurses' Health Study (JNHS) is a large-scale, nationwide prospective cohort study of female nurses. This aimed to examine the validity self-reported diagnosis cancer among JNHS members (N=15,019).For women who reported any five cancers (stomach, colorectal, liver, lung and thyroid) in biennial follow-up surveys, an additional outcome survey, medical facility confirmation death certificate (DC) were conducted. Validation Committee (referred as "the committee") made final decision on outcomes. To cancer, positive predictive value (PPV) was calculated using committee's gold standard. based self-reports DCs, PPV physician-reported information standard.The surveys 77.8% for stomach, 66.2% 41.7% 60.2% lung, 64.6% thyroid cancer. corresponding PPVs survey 96.2%, 80.7%, 62.5%, 82.5%, 96.9%, respectively. 100% 87.5% 94.7% (data not available liver cancer). proportion DC-only cases committee-defined below 10% all except (28.6%).The identifying favorable