Table 1 Descriptive characteristics of African-American and European-American women by case-control status in the Women's Circle of Health Study
| African-American | European-American | |||||
|---|---|---|---|---|---|---|
| Characteristics |
Case (n= 547) |
Control (n = 461) | P value |
Case (n = 381) |
Control (n = 382) | P value |
| Mean (SD) | Mean (SD) | Mean (SD) | Mean (SD) | |||
| Age, years | 51.7 (10.0) | 49.8 (9.9) | 0.003 | 51.0 (8.4) | 50.9 (8.3) | 0.82 |
| Body mass index, kg/m2 | 31.2 (6.7) | 31.6 (7.8) | 0.48 | 26.8 (5.8) | 27.7 (7.1) | 0.06 |
| Percentage with European ancestry | 0.09 (0.15) | 0.10 (0.16) | 0.19 | 0.98 (0.07) | 0.99 (0.03) | 0.07 |
| Count (%) | Count (%) | Count (%) | Count (%) | |||
| Menopausal status | 0.14 | 0.17 | ||||
| Pre-menopausal | 337 (61.6) | 263 (57.0) | 235 (61.7) | 217 (56.8) | ||
| Post-menopausal | 210 (38.4) | 198 (43.0) | 146 (38.3) | 165 (43.2) | ||
| Family history | 0.13 | 0.001 | ||||
| Yes | 82 (15.0) | 54 (11.7) | 104 (27.3) | 67 (17.5) | ||
| No | 465 (85.0) | 407 (88.3) | 277 (72.7) | 315 (82.5) | ||
| Education | 0.06 | < 0.001 | ||||
| Less than high school | 76 (13.9) | 55 (11.9) | 9 (2.4) | 4 (1.1) | ||
| High school | 175 (32.0) | 122 (26.5) | 80 (21.0) | 44 (11.5) | ||
| College or above | 296 (54.1) | 284 (61.6) | 292 (76.6) | 334 (87.4) | ||
| Hormone replacement therapy | 0.74 | 0.47 | ||||
| Yes | 79 (14.5) | 62 (14.2) | 96 (25.3) | 88 (23.0) | ||
| No | 464 (85.5) | 397 (85.8) | 284 (74.7) | 294 (77.0) | ||