Table 1.
Characteristics of Million Women Study participants with ovarian cancer by ovarian cancer-specific survival
| Death from ovarian cancer |
|||
|---|---|---|---|
| Characteristic | No (n = 4525) | Yes (n = 8697) | All (N = 13,222) |
| Age at diagnosis, mean (SD) | 67.8 (7.3) | 67.8 (7.2) | 67.8 (7.2) |
| Follow-up time from diagnosis (years), mean (SD) | 8.8 (6.0) | 2.2 (2.3) | 4.5 (5.1) |
| Lifestyle factors | |||
| Body mass index (kg/m2), mean (SD) | 26.2 (4.6) | 26.4 (4.8) | 26.3 (4.7) |
| Height (cm), mean (SD) | 162.4 (6.6) | 162.5 (6.6) | 162.5 (6.6) |
| Socioeconomic status, lower third, % (n) | 31 (1382) | 33 (2817) | 32 (4199) |
| Tertiary education, % (n) | 13 (581) | 12 (1020) | 12 (1601) |
| Strenuous exercise ≥once/week, % (n) | 40 (1735) | 40 (3304) | 40 (5039) |
| Alcohol, > 7 units/ week, % (n) | 20 (914) | 18 (1565) | 19 (2479) |
| Current smoker, % (n) | 19 (791) | 19 (1528) | 19 (2319) |
| Reproductive/ hormonal factors | |||
| Age at menarche, mean (SD) | 13.0 (1.6) | 13.0 (1.6) | 13.0 (1.6) |
| Nulliparous, % (n) | 15 (674) | 13 (1142) | 14 (1816) |
| Ever use of oral contraceptive pill, % (n) | 56 (2501) | 50 (4266) | 52 (6767) |
| Ever use of menopausal hormones, % (n) | 48 (2161) | 49 (4211) | 49 (6372) |
| Hysterectomy, % (n) | 20 (885) | 19 (1681) | 20 (2566) |
| Tubal ligation, % (n) | 19 (818) | 17 (1474) | 18 (2292) |
| Family history of breast cancer | 11 (477) | 11 (907) | 11 (1384) |
| Tumour characteristics | |||
| Histological type, % (n) | |||
| Serous borderline tumour | 11 (479) | 0.4 (35) | 4 (514) |
| Mucinous borderline tumour | 13 (594) | 0.3 (23) | 5 (617) |
| Serous carcinoma | 36 (1609) | 51 (4459) | 46 (6068) |
| Mucinous carcinoma | 8 (352) | 3 (225) | 4 (577) |
| Endometrioid carcinoma | 11 (481) | 4 (316) | 6 (797) |
| Clear cell carcinoma | 6 (259) | 3 (258) | 4 (517) |
| Carcinosarcoma | 2 (76) | 3 (300) | 3 (376) |
| Other/ Unspecified | 15 (675) | 35 (3081) | 28 (3756) |
| Stage at diagnosis, % (n) | |||
| Stage I | 53 (1558) | 6 (295) | 24 (1853) |
| Stage II | 10 (287) | 5 (228) | 7 (515) |
| Stage III | 29 (848) | 59 (2858) | 47 (3706) |
| Stage IV | 9 (265) | 31 (1497) | 22 (1762) |
Notes: Table shows column %. Numbers may not sum to total due to missing data.