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. 2024 May 21;193(9):1242–1252. doi: 10.1093/aje/kwae076

Table 2.

Continued.

Variable Asianb Native Hawaiian/Pacific Islander b Hispanic White, non-Hispanic
Cases, no. (%) Controls, no. (%) Cases, no. (%) Controls, no. (%) Cases, no. (%) Controls, no. (%) Cases, no. (%) Controls, no. (%)
BMI, age 18 y
 <18.5 133 (23.2) 141 (19.4) 10 (10.3) 9 (5.4) 56 (13.2) 73 (13.6) 1110 (16.6) 1634 (18.0)
 18.5-24.9 402 (70.0) 540 (74.4) 60 (61.9) 106 (64.6) 303 (71.5) 394 (73.6) 4938 (73.6) 6754 (74.3)
 25.0-29.9 30 (5.2) 40 (5.5) 15 (15.5) 31 (18.9) 49 (11.6) 52 (9.7) 512 (7.6) 547 (6.0)
 ≥30.0 9 (1.6) 5 (0.7) 12 (12.4) 18 (11.0) 16 (3.8) 16 (3.0) 148 (2.2) 161 (1.8)
 Missing data 211 223 2 3 81 109 3273 5112
Smoking
 Never 636 (83.1) 688 (74.2) 58 (58.6) 86 (51.5) 248 (62.3) 323 (63.7) 4959 (53.3) 7168 (53.1)
 Former 32 (4.2) 87 (9.4) 14 (14.1) 41 (24.6) 107 (26.9) 132 (26.0) 3192 (34.3) 4858 (36.0)
 Current 97 (12.7) 152 (16.4) 27 (27.3) 40 (24.0) 43 (10.8) 52 (10.3) 1162 (12.5) 1464 (10.9)
 Missing data 20 22 0 0 107 137 668 718
Family history of breast cancer
 No 466 (87.1) 476 (84.3) 39 (69.6) 34 (59.7) 324 (83.9) 425 (89.9) 6649 (79.8) 10259 (83.2)
 Yes 69 (12.9) 89 (15.8) 17 (30.4) 23 (40.4) 62 (12.1) 48 (10.2) 1679 (20.2) 2073 (16.8)
 Missing data 250 384 43 110 119 171 1653 1876
Family history of ovarian cancer
 No 489 (95.7) 511 (96.2) 47 (94.0) 40 (97.6) 346 (91.8) 436 (94.4) 7656 (93.5) 11792 (97.0)
 Yes 22 (4.3) 20 (3.8) 3 (6.0) 1 (1.1) 31 (8.2) 26 (5.6) 530 (6.5) 366 (3.0)
 Missing data 274 418 49 126 128 182 1795 2050
Histology/grade
 High-grade serous 352 (44.8) 46 (46.5) 323 (64.0) 6512 (65.2)
 Low-grade serous 5 (0.6) 0 26 (5.1) 310 (3.1)
 Endometrioid 98 (12.5) 13 (13.1) 48 (9.5) 999 (10.0)
 Mucinous 85 (10.8) 13 (13.1) 42 (8.3) 482 (4.8)
 Clear cell 148 (18.9) 15 (15.2) 24 (4.8) 675 (6.8)
 Mixed cell 16 (2.0) 1 (1.0) 4 (0.8) 293 (2.9)
 Other epithelial 81 (10.4) 11 (11.1) 38 (7.5) 710 (7.1)
Stage
 Localized 221 (28.2) 34 (34.3) 98 (19.1) 1416 (14.2)
 Regional 146 (18.6) 20 (20.2) 75 (14.6) 1397 (14.0)
 Distant 312 (39.8) 43 (43.4) 314 (61.2) 5912 (59.3)
 Unknown stage 106 (13.5) 2 (2.0) 18 (3.6) 1256 (12.6)

Abbreviations: BMI, body mass index; DOV, Diseases of the Ovary and their Evaluation Study; HAW, Hawaii Ovarian Cancer Case-Control Study; MAY, Mayo Clinic Ovarian Cancer Case-Control Study; NJO, the New Jersey Ovarian Cancer Study; OC, oral contraceptive; OVA, Ovarian Cancer in Alberta and British Columbia Study; STA, Genetic Epidemiology of Ovarian Cancer; USC, Los Angeles County Case-Control Studies of Ovarian Cancer.

a The following variables were missing for certain study sites: breastfeeding (MAY); endometriosis (OVA, STA); BMI recent (OVA, STA); BMI at age 18 (MAY, OVA, STA); postmenopausal hormone use (STA). One study (MAY) was an outlier and was excluded from hysterectomy analysis.

b Asian includes Chinese, Japanese, Korean, Filipino, Vietnamese, Thai. Native Hawaiian/Pacific Islander includes Hawaiian, Pacific Islander (Tongan, Samoan, Māori, Palauan, Chuukese, Micronesian).

c Reference date is defined as age at diagnosis for cases and age at interview for control participants.

d Breastfeeding refers to parous women only.

ePostmenopausal hormone use refers to use of estrogen only, estrogen plus progesterone, and unknown formulation types among postmenopausal women only.

f Recent BMI refers to 1 year before the reference date for all sites, except for DOV and HAW (5 years before the reference date). BMI calculated as weight (kg) divided by height (m2).