Table 2 Select characteristics of study participants, stratified by case-control status
From: Inherited common variants in mitochondrial DNA and invasive serous epithelial ovarian cancer risk
Variable | Cases (N, %) or (Mean, SD) | Controls (N, %) or (Mean, SD) |
|---|---|---|
N | 392 | 439 |
Age (y) | 60.9 (10.3) | 60.2 (10.4) |
BMI1 (kg/m2) | 25.3 (4.8) | 25.9 (4.9) |
Parity2 | ||
Nulliparous | 62 (16) | 53 (12) |
1-2 pregnancies | 146 (37) | 179 (41) |
3+ pregnancies | 184 (47) | 207 (47) |
Missing | 0 (0) | 0 (0) |
OC use | ||
Never | 146 (37) | 112 (25) |
Ever | 245 (63) | 327 (75) |
Missing | 1 (0) | 0 (0) |
Family history of ovarian or breast cancer in >1 FDR | ||
No | 290 (74) | 352 (80) |
Yes | 87 (22) | 75 (17) |
Missing | 15 (4) | 12 (3) |
Pack-years smoked3 | ||
None | 224 (57) | 206 (47) |
< 20 | 68 (17) | 118 (27) |
> 20 | 98 (25) | 113 (26) |
Missing | 2 (0) | 2 (0) |
HT use | ||
Never | 205 (52) | 263 (60) |
Ever | 187 (48) | 176 (40) |
Missing | 0 (0) | 0 (0) |