Table 1 Baseline characteristics of study participants.
Variables | All | Women without endometriosis | Women with endometriosis | P value |
|---|---|---|---|---|
No. of participants | 1768 | 1639 | 129 | |
No. of participants, weighted | 43,824,157 | 39,644,285 | 4,179,872 | |
HPV (+) | 822 (42.6%) | 765 (43.2%) | 57 (36.9%) | 0.35 |
High risk HPV (+) | 520 (26.7%) | 489 (27.4%) | 31 (19.8%) | 0.15 |
Age categories, weighted % | ||||
20–34 | 717 (30.0%) | 697 (31.7%) | 20 (13.3%) | < 0.001 |
35–54 | 1051 (70.0%) | 942 (68.3%) | 109 (86.7%) | |
Race/ethnicity, weighted % | ||||
Hispanic | 464 (12.9%) | 452 (13.7%) | 12 (4.9%) | < 0.001 |
Non-Hispanic White | 775 (67.5%) | 692 (66.0%) | 83 (81.7%) | |
Non-Hispanic Black | 459 (14.6%) | 428 (15.1%) | 31 (10.2%) | |
Other races | 70 (5.1%) | 67 (5.3%) | 3 (3.3%) | |
Education, weighted % | ||||
Less than high school | 434 (15.8%) | 417 (16.5%) | 17 (9.6%) | 0.20 |
High school graduate | 423 (24.8%) | 391 (24.1%) | 32 (31.5%) | |
Some college or AA degree | 603 (37.5%) | 552 (37.5%) | 51 (36.8%) | |
College graduate or above | 308 (21.9%) | 279 (21.9%) | 29 (22.0%) | |
Ratio of family income to poverty, weighted % | ||||
< 1.5 | 674 (26.3%) | 637 (26.4%) | 37 (25.7%) | 0.48 |
1.5 ≤ < 3.0 | 437 (25.0%) | 411 (25.5%) | 26 (20.5%) | |
≥ 3.0 | 657 (48.7%) | 591 (48.1%) | 66 (53.7%) | |
Marital status, weighted % | ||||
Married/living with partners | 1210 (72.3%) | 1129 (73.0%) | 81 (65.9%) | 0.09 |
Widowed/divorced/separated | 313 (18.1%) | 277 (17.3%) | 36 (26.2%) | |
Never married | 245 (9.5%) | 233 (9.7%) | 12 (7.9%) | |
Number of vaginal/cesarean deliveries, weighted % | ||||
0 | 118 (7.3%) | 107 (7.1%) | 11 (9.3%) | 0.18 |
1–3 times | 1427 (82.5%) | 1317 (82.1%) | 110 (85.9%) | |
≥ 4 times | 223 (10.3%) | 215 (10.9%) | 8 (4.8%) | |
Oral contraceptive use ≥ 5 years, weighted % | 586 (39.0%) | 528 (38.3%) | 58 (45.4%) | 0.11 |
Lifetime number of male sex partners, weighted % | ||||
≤ 2 | 480 (26.3%) | 454 (26.5%) | 26 (24.4%) | 0.44 |
3–4 | 316 (18.8%) | 289 (18.3%) | 27 (24.1%) | |
5–9 | 448 (27.1%) | 415 (27.5%) | 33 (23.1%) | |
≥ 10 | 437 (27.8%) | 400 (27.7%) | 37 (28.4%) | |
Age at first sexual intercourse, weighted % | ||||
≤ 16 | 769 (45.4%) | 714 (45.1%) | 55 (48.7%) | 0.30 |
17–18 | 478 (28.3%) | 436 (28.0%) | 42 (31.2%) | |
≥ 19 | 441 (26.3%) | 415 (26.9%) | 26 (20.2%) | |
Number of vaginal or anal sex in the past 12 months, weighted % (2005–2006) | ||||
0–11 times | 185 (22.1%) | 169 (22.3%) | 16 (20.7%) | 0.001 |
12–51 times | 293 (39.5%) | 264 (37.3%) | 29 (63.8%) | |
52–103 times | 185 (22.4%) | 179 (23.2%) | 6 (12.6%) | |
≥ 104 times | 139 (16.0%) | 136 (17.2%) | 3 (2.9%) | |
High-risk alcohol intake, weighted % | 129 (8.1%) | 120 (8.0%) | 9 (8.7%) | 0.85 |
Smoking status, weighted % | ||||
Never smoker | 1060 (55.3%) | 994 (56.3%) | 66 (45.7%) | 0.02 |
Ex-smoker | 292 (18.1%) | 269 (18.1%) | 23 (18.3%) | |
Current smoker | 416 (26.6%) | 376 (25.6%) | 40 (36.1%) | |
Covered by health insurance, weighted % | 1342 (80.9%) | 1235 (80.3%) | 107 (86.1%) | 0.06 |
Number of healthcare utilization in the past year, weighted % | ||||
0–1 time | 537 (30.8%) | 504 (31.1%) | 33 (28.2%) | 0.10 |
2–3 times | 438 (27.6%) | 414 (28.3%) | 24 (21.6%) | |
4–9 times | 450 (24.2%) | 412 (24.1%) | 38 (24.4%) | |
≥ 10 times | 343 (17.4%) | 309 (16.5%) | 34 (25.9%) | |
History of cervical cancer | 38 (2.2%) | 30 (1.9%) | 8 (4.9%) | 0.02 |
