Table 1.
Characteristics of Cervical Squamous Cell Carcinoma Case and Controls, Seattle Metropolitan Area, 1986–1998
| Controls (N=1258) |
Cases (N=561) |
|||
|---|---|---|---|---|
| Characteristic | n | (%) | N | (%) |
| Reference age (years) | ||||
| 18–40 | 420 | (33.4) | 181 | (32.3) |
| 40–59 | 398 | (31.6) | 168 | (29.9) |
| 60–74 | 440 | (35.0) | 212 | (37.8) |
| Race | ||||
| Caucasian | 1158 | (92.1) | 497 | (88.6) |
| African-American | 31 | (2.5) | 24 | (4.3) |
| Asian | 45 | (3.6) | 21 | (3.7) |
| Other | 24 | (1.9) | 19 | (3.4) |
| Highest educational attainment | ||||
| Some high school or less | 65 | (5.2) | 82 | (14.6) |
| High school graduate | 301 | (23.9) | 186 | (33.2) |
| Some college/technical school | 442 | (35.1) | 197 | (35.1) |
| College graduate | 295 | (23.4) | 63 | (11.2) |
| Postgraduate education | 155 | (12.3) | 33 | (5.9) |
| Household income | ||||
| <$15,000 | 148 | (11.9) | 158 | (28.5) |
| $15–30,000 | 360 | (29.0) | 161 | (29.0) |
| $30–45,000 | 264 | (21.3) | 107 | (19.3) |
| >$45,000 | 469 | (37.8) | 129 | (23.2) |
| refused/unknown | 17 | 6 | ||
| Lifetime number of sex partners | ||||
| 0 | 15 | 0 | ||
| 1 | 382 | (30.9) | 62 | (11.1) |
| 2 to 4 | 348 | (28.1) | 191 | (34.1) |
| 5 to 14 | 374 | (30.2) | 212 | (37.9) |
| 15+ | 133 | (10.8) | 95 | (17.0) |
| Age at first intercourse (years) | ||||
| Up to 17 | 316 | (25.2) | 221 | (39.5) |
| 18–19 | 482 | (38.5) | 239 | (42.7) |
| 20+ | 455 | (36.3) | 100 | (17.9) |
| refused/unknown | 5 | 1 | ||
| Cigarette smoking at reference date | ||||
| Never | 657 | (52.2) | 185 | (33.0) |
| Former | 302 | (24.0) | 141 | (25.1) |
| Current | 299 | (23.8) | 235 | (41.9) |
| Parity | ||||
| 0 | 319 | (25.4) | 100 | (17.8) |
| 1 | 213 | (16.9) | 99 | (17.6) |
| 2 | 374 | (29.7) | 152 | (27.1) |
| 3+ | 352 | (28.0) | 210 | (37.4) |