Demographic characteristics of women at baseline, 6 months and 12 months (unweighted)
| Baseline | 6 months | 12 months | |
| Total n | 1133 | 762 | 537 |
| Age, mean years (SD) | 41.2 (11.8) | 42.9 (11.7) | 43.2 (12.0) |
| Marital status, n (%) | |||
| Current partner | 859 (75.8) | 582 (76.4) | 420 (78.2) |
| No partner | 253 (22.3) | 170 (22.3) | 112 (20.9) |
| Ethnicity, n (%) | |||
| White (British or other) | 1016 (89.7) | 702 (92.1) | 497 (92.6) |
| Other ethnicity | 91 (8.0) | 46 (6.0) | 33 (6.1) |
| Prefer not to say | 3 (0.3) | 1 (0.1) | 0 (0) |
| IMD quintile, n (%) | |||
| 1 (most deprived) | 172 (15.2) | 97 (12.7) | 62 (11.5) |
| 2 | 211 (18.6) | 129 (16.9) | 90 (16.8) |
| 3 | 278 (24.5) | 193 (25.3) | 155 (28.9) |
| 4 | 195 (17.2) | 140 (18.4) | 106 (19.7) |
| 5 (least deprived) | 193 (17.0) | 145 (19.0) | 93 (17.3) |
| Education, n (%) | |||
| Degree or higher | 481 (42.5) | 344 (45.1) | 247 (46.0) |
| Qualification below degree | 538 (47.5) | 355 (46.6) | 246 (45.8) |
| No formal qualifications | 83 (7.3) | 49 (6.4) | 36 (6.7) |
| Previous screens, mean screens (SD) | 6.3 (4.9) | 7.0 (4.9) | 7.0 (4.8) |
| NHS site, n (%) | |||
| Liverpool | 188 (16.6) | 125 (16.4) | 96 (17.9) |
| Sheffield | 210 (18.5) | 137 (18.0) | 112 (20.9) |
| London North West | 148 (13.1) | 85 (11.2) | 76 (14.2) |
| Norfolk and Norwich | 200 (17.7) | 136 (17.8) | 122 (22.7) |
| Manchester | 387 (34.2) | 279 (36.6) | 131 (24.4) |
| Result group, n (%) | |||
| HPV positive, normal | 259 (22.9) | 175 (23.0) | 109 (20.3) |
| HPV positive, abnormal | 172 (15.2) | 107 (14.0) | 73 (13.6) |
| HPV persistent* | 179 (15.8) | 118 (15.5) | 89 (16.6) |
| Control group† | 523 (46.2) | 362 (47.5) | 266 (49.5) |
| Not tested for HPV | 208 (18.4) | 136 (17.8) | 101 (18.8) |
| HPV negative | 249 (22.0) | 184 (24.1) | 130 (24.2) |
| HPV cleared* | 66 (5.8) | 42 (5.5) | 35 (6.5) |
% may not add up to 100% due to missing data; <8% missing for any variable.
*Women who were HPV persistent and HPV cleared had tested HPV positive ~1 year earlier and the baseline questionnaire was following their early recall result.
†The control group included women who were not tested for HPV, HPV negative or HPV cleared.
HPV, human papillomavirus; IMD, Index of Multiple Deprivation; NHS, National Health Service.