Table 1 Characteristics of the study populations
From: Mammographic density and risk of breast cancer by age and tumor characteristics
Study name (abbreviation) | Reference | Study design | Number of cases/controls | Enrollment year(s) | Mammogram film view | Median interval (years) between mammogram and diagnosis (index date) | Source of cases | Source of pathology | Source of covariate data |
|---|---|---|---|---|---|---|---|---|---|
Mayo Mammography Health Study (MMHS) | Nested case–control study | 404/1,207 | 2003 to 2006 | CC average | 3.6 | Linkage to clinic and state cancer registries | Clinic and three state cancer registries;medical records | Questionnaire and medical record review (BMI) | |
Mayo Clinic Breast Cancer Study (MCBCS) | Case–control study | 261/179 | 2001 to 2008 | CC contralateral | 1.3 | Clinic | Clinic cancer registry; medical records | Questionnaire and medical record review (BMI) | |
Nurses’ Health Study (NHS) | Nested case–control study | 1,108/2,163 | 1989 to 1990 | CC average | 5.2 | Self-report | Pathology reports and tumor tissue microarray | Questionnaire | |
Nurses’ Health Study II (NHSII) | [32] | Nested case–control study | 365/992 | 1996 to 1999 | CC average | 4.2 | Self-report | Pathology reports and tumor tissue microarray | Questionnaire |
Mayo Clinic Mammography Study (MCMAM) | [34] | Case–control study | 372/679 | 1997 to 2001 | CC average | 7.1 | Clinic | Clinic cancer registries; medical records | Medical record review |
Bay Area Breast Cancer SPORE and San Francisco Mammography Registry (SFMR) | Nested case–control study | 904/1,979 | 1996 to 2007 | CC contralateral | 3.1 | Linkage to state-wide SEER program | SEER | Questionnaire |