Am J Epidemiol 2003; 157:792-799.
Copyright © 2003 by Johns
Hopkins Bloomberg School of Public Health
ORIGINAL CONTRIBUTIONS |
Reported Family History of Cancer in the Prostate, Lung, Colorectal, and Ovarian Cancer Screening Trial
1 Division of Cancer Prevention, National Cancer Institute, Bethesda, MD.
2 Office of Disease Prevention, Office of the Director, National Institutes of Health, Bethesda, MD.
3 Marshfield Medical Research and Education Foundation, Marshfield, WI.
4 Division of Hematology-Oncology, Department of Internal Medicine, University of Utah School of Medicine, Salt Lake City, UT.
The authors analyzed data from almost 150,000 subjects aged 5574 years enrolled in the Prostate, Lung, Colorectal, and Ovarian Cancer Screening Trial who completed a self-administered baseline questionnaire (19932001) that included items about family history of cancer. Male respondents reported significantly less family history of cancer than females. The relative underreporting by male respondents relative to females was greater for female family members (28% lower for sisters and 21% lower for mothers) than for male family members (13% lower for brothers and 9% lower for fathers). Black, Hispanic, and Asian respondents reported significantly less family history of cancer than Whites. Reported family history prevalences for parents decreased with respondents age, while those for siblings increased with respondents age. The four most commonly reported cancers in families were breast (11.8%), lung (10.1%), colorectal (9.4%), and prostate (7.3%) cancer. Expected prevalences in family members of history of cancer overall and history of specific types of cancer were calculated using incidence rates and life table data obtained from the Surveillance, Epidemiology, and End Results Program. Overall, the ratio of reported cancer rates to expected cancer rates in family members was approximately 0.7. Liver, bone, stomach, and brain cancer had greater-than-average reported:expected ratios, while lymphoma, bladder cancer, melanoma, and testicular cancer had lower-than-average ratios.
ethnic groups; family characteristics; genetic predisposition to disease; neoplasms; questionnaires; sex factors
Abbreviations: Abbreviations: CI, confidence interval; PLCO, Prostate, Lung, Colorectal, and Ovarian; SEER, Surveillance, Epidemiology, and End Results.
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