Table 1.
Characteristics of women at enrolment, by trial arm. Figures are numbers (percentages) of women
| Cytological surveillance | Colposcopy | |
|---|---|---|
| Total | 2223 | 2216 |
| Cytology status at enrolment: | ||
| Mild, with previous borderline nuclear abnormalities | 57 (2.6) | 60 (2.7) |
| Mild, no previous borderline nuclear abnormalities | 732 (32.9) | 727 (32.8) |
| Borderline nuclear abnormalities, with previous borderline nuclear abnormalities | 329 (14.8) | 317 (14.3) |
| Borderline nuclear abnormalities, no previous borderline nuclear abnormalities | 1105 (49.7) | 1112 (50.1) |
| Age (years): | ||
| 20-29 | 982 (44.2) | 978 (44.1) |
| 30-39 | 596 (26.8) | 596 (26.9) |
| 40-49 | 459 (20.6) | 455 (20.5) |
| 50-59 | 186 (8.4) | 187 (8.4) |
| Human papillomavirus (HPV) status: | ||
| High risk HPV | 875 (39.4) | 880 (39.7) |
| No high risk HPV | 1147 (51.6) | 1129 (50.9) |
| Not known* | 201 (9.0) | 207 (9.3) |
| Centre: | ||
| A | 738 (33.2) | 739 (33.3) |
| B | 553 (24.9) | 548 (24.7) |
| C | 932 (41.9) | 929 (41.9) |
| Ethnic group†: | ||
| White | 2112 (95.0) | 2108 (95.1) |
| Other‡ | 98 (4.4) | 91 (4.1) |
| Not stated | 13 (0.6) | 17 (0.8) |
| Post school education and training†: | ||
| None | 620 (27.9) | 615 (27.8) |
| Through work with formal qualifications | 448 (20.2) | 424 (19.1) |
| Qualification other than degree from college or university | 634 (28.5) | 627 (28.3) |
| Degree | 502 (22.6) | 537 (24.2) |
| Not stated | 19 (0.9) | 13 (0.6) |
| Employment status†: | ||
| Full time paid employment | 1096 (49.3) | 1082 (48.8) |
| Part time paid employment | 512 (23.0) | 508 (22.9) |
| Student | 207 (9.3) | 216 (9.7) |
| Not in paid employment | 397 (17.9) | 400 (18.1) |
| Not stated | 11 (0.5) | 10 (0.5) |
| Marital status†: | ||
| Married/living as married | 1235 (55.6) | 1177 (53.1) |
| Divorced/separated/widowed | 298 (13.4) | 303 (13.7) |
| Single | 660 (29.7) | 711 (32.1) |
| Not stated | 30 (1.4) | 25 (1.1) |
| Ever been pregnant†: | ||
| Yes | 1459 (65.6) | 1480 (66.8) |
| No | 740 (33.3) | 721 (32.5) |
| Not stated | 24 (1.1) | 15 (0.7) |
| Parity: | ||
| 0 | 953 (42.9) | 972 (43.9) |
| 1 | 370 (16.6) | 341 (15.4) |
| ≥2 | 835 (37.6) | 855 (38.6) |
| Not stated | 65 (2.9) | 48 (2.2) |
| Contraception†: | ||
| Use of pill or other hormonal contraceptives only | 840 (37.8) | 795 (35.9) |
| Use of barrier contraceptive only | 272 (12.2) | 306 (13.8) |
| Use of hormonal and barrier contraceptives | 83 (3.7) | 83 (3.7) |
| None | 1018 (45.8) | 1023 (46.2) |
| Not stated | 10 (0.5) | 9 (0.4) |
| Physical activity†: | ||
| <1 time/week | 879 (39.5) | 885 (39.9) |
| 1-3 times/week | 534 (24.0) | 491 (22.2) |
| >3 times/week | 770 (34.6) | 803 (36.2) |
| Not stated | 40 (1.8) | 37 (1.7) |
| Smoking status†: | ||
| Never smoker | 1027 (46.2) | 1016 (45.8) |
| Former smoker | 383 (17.2) | 368 (16.6) |
| Current smoker | 783 (35.2) | 810 (36.6) |
| Not stated | 30 (1.4) | 22 (1.0) |
*Includes women whose samples were inadequate for analysis (n=28) and women who did not have human papillomavirus test at recruitment (n=380), most of whom declined to provide sample because they were menstruating at time of recruitment appointment.
†Enrolment questionnaires on sociodemographic characteristics not completed by 10 women in cytological surveillance arm and 9 in colposcopy arm.
‡Comprises women in following categories defined by 1991 Census: black-Caribbean (n=65), black-African (n=14), black-other (n=16), Indian (n=23), Pakistani (n=23), Bangladeshi (n=2), Chinese (n=16), other ethnic group (n=30).