Table 1.
Description of participating cohorts
| Consortium name/cohort name |
Cohort acronym | Age at menarche |
Birth year |
||||
|---|---|---|---|---|---|---|---|
| n | Mean (SD) | Range | Mean | Range | |||
| AABC (African American Breast Cancer Cohorts) | The Women's Contraceptive and Reproductive Experience Study | CARE (cases) | 357 | 12.4 (1.7) | 8–18 | NA | NA |
| CARE (controls) | 215 | 12.3 (1.74) | 9–18 | NA | NA | ||
| The Carolina Breast Cancer Study | CBCS (cases) | 634 | 12.6 (1.8) | 8–21 | NA | NA | |
| CBCS (controls) | 586 | 12.6 (1.75) | 8–18 | NA | NA | ||
| The Multiethnic Cohort | MEC (cases) | 532 | 12.9 (1.66) | 10–17 | NA | NA | |
| MEC (controls) | 972 | 13.2 (1.6) | 10–17 | NA | NA | ||
| The Nashville Breast Health Study | NBHS (cases) | 304 | 12.6 (1.99) | 8–21 | NA | NA | |
| NBHS (controls) | 182 | 12.4 (1.9) | 8–21 | NA | NA | ||
| Northern California Breast Cancer Family Registry/San Francisco Breast Cancer Study | NC-BCFR/SFBCS (cases) | 575 | 12.6 (1.8) | 8–20 | NA | NA | |
| NC-BCFR/SFBCS (controls) | 269 | 12.6 (1.8) | 8–20 | NA | NA | ||
| The Prostate, Lung, Colorectal, and Ovarian Cancer Screening Trial | PLCO (Cases) | 56 | 13.3 (1.3) | 9–16 | NA | NA | |
| PLCO (controls) | 116 | 13.1 (1.76) | 9–16 | NA | NA | ||
| The Women's Circle of Health Study | WCHS (cases) | 260 | 12.7 (1.9) | 9–19 | NA | NA | |
| WCHS (controls) | 238 | 12.7 (1.7) | 9–18 | NA | NA | ||
| The Wake Forest University Breast Cancer Study | WFBC (cases) | 112 | 12.5 (1.6) | 8–16 | NA | NA | |
| WFBC (controls) | 116 | 12.7 (1.7) | 9–18 | NA | NA | ||
| CARe (Candidate Gene Association Resource) | Atherosclerosis Risk in Communities | ARIC | 1,690 | 12.87 (1.66) | 9–17 | 1934 | 1921–1945 |
| Coronary Artery Disease in Young Adults | CARDIA | 630 | 12.48 (1.47) | 9–17 | 1959 | 1957–1969 | |
| Cleveland Family Study | CFS | 169 | 12.22 (1.37) | 10–16 | 1964 | 1908–1997 | |
| Jackson Heart Study | JHS | 1,228 | 12.77 (1.70) | 9–17 | 1952 | 1910–1982 | |
| Women's Health Initiative | WHI | 8,086 | 12.6 (1.64) | 9–17 | 1935 | 1913–1948 | |
| Healthy Aging in Neighborhoods of Diversity across the Life Span | HANDLS | 617 | 12.6 (1.80) | 9–17 | 1962 | 1946–1980 | |
| Bogalusa Heart Study | BHS | 145 | 12.5 (1.37) | 9–17 | 1966 | 1959–1978 | |
| TOTAL Stage 1 | 18,089 | ||||||
| Black Women's Health Study (Stage 2 Replication Cohort) | BWHS | 2,850 | 12.4 (1.6) | 9–17 | 1947 | 1925–1974 | |