» Articles » PMID: 35225478

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

Overview
Specialty Oncology
Date 2022 Feb 28
PMID 35225478
Authors
Affiliations
Soon will be listed here.
Abstract

Background: The Japan Nurses' Health Study (JNHS) is a large-scale, nationwide prospective cohort study of female nurses. This study aimed to examine the validity of self-reported diagnosis of cancer among the JNHS cohort members (N=15,019).

Methods: For women who reported any diagnosis of five cancers (stomach, colorectal, liver, lung and thyroid) in the biennial follow-up surveys, an additional outcome survey, medical facility survey, and confirmation of death certificate (DC) were conducted. The JNHS Validation Study Committee (referred to as "the committee") made a final decision on the reported outcomes. To examine the validity of self-reported diagnosis of cancer, the positive predictive value (PPV) was calculated using the committee's decision as the gold standard. To examine the validity of the committee's decision based on self-reports and DCs, PPV was calculated using physician-reported information as the gold standard.

Results: The PPV of self-reported diagnosis in the biennial follow-up surveys was 77.8% for stomach, 66.2% for colorectal, 41.7% for liver, 60.2% for lung, and 64.6% for thyroid cancer. The corresponding PPVs in the additional outcome survey were 96.2%, 80.7%, 62.5%, 82.5%, and 96.9%, respectively. The PPV of the committee's decision was 100% for stomach, 87.5% for colorectal, 94.7% for lung, and 100% for thyroid cancer (data not available for liver cancer). The proportion of DC-only cases among committee-defined cases was below 10% for all cancers except liver cancer (28.6%).

Conclusions: The validity of identifying cancer diagnosis based on self-reported information in the JNHS was favorable for stomach, colorectal, lung and thyroid cancer.

References
1.
Tanaka H, Matsuda T . Arrival of a new era in Japan with the establishment of the Cancer Registration Promotion Act. Eur J Cancer Prev. 2015; 24(6):542-3. DOI: 10.1097/CEJ.0000000000000095. View

2.
Hori M, Matsuda T, Shibata A, Katanoda K, Sobue T, Nishimoto H . Cancer incidence and incidence rates in Japan in 2009: a study of 32 population-based cancer registries for the Monitoring of Cancer Incidence in Japan (MCIJ) project. Jpn J Clin Oncol. 2015; 45(9):884-91. DOI: 10.1093/jjco/hyv088. View

3.
Bergmann M, Calle E, Mervis C, Thun M, HEATH C . Validity of self-reported cancers in a prospective cohort study in comparison with data from state cancer registries. Am J Epidemiol. 1998; 147(6):556-62. DOI: 10.1093/oxfordjournals.aje.a009487. View

4.
Feskanich D, Bain C, Chan A, Pandeya N, Speizer F, Colditz G . Aspirin and lung cancer risk in a cohort study of women: dosage, duration and latency. Br J Cancer. 2007; 97(9):1295-9. PMC: 2360462. DOI: 10.1038/sj.bjc.6603996. View

5.
Inoue M, Sawada N, Shimazu T, Yamaji T, Iwasaki M, Sasazuki S . Validity of self-reported cancer among a Japanese population: recent results from a population-based prospective study in Japan (JPHC Study). Cancer Epidemiol. 2011; 35(3):250-3. DOI: 10.1016/j.canep.2010.12.002. View