ASCQ-FFQ cohort: proportions reporting sex in 1998 assisted self-completed questionnaires (ASCQs) and in 1998 face to face questionnaires (FFQs), according to the presence of biological markers
| ASCQ-FFQ cohort | n | n (%) reporting vaginal intercourse | ||
|---|---|---|---|---|
| 1998 ASCQ | 1998 FFQ | p Value* | ||
| *The McNemar’s and binomial tests assessed the difference between (a) the number of people who had reported sex in the ASCQ but not the FFQ, and (b) the number of people who reported sex in the FFQ but not the ASCQ. The tests were not applicable when the value for (a) or (b) was zero; for example, none of the females with CT and/or NG reported sex in the ASCQ but not in the FFQ. | ||||
| CT, Chlamydia trachomatis; NG, Neisseria gonorrhoeae; NA, not applicable. | ||||
| Males | 2573 | 1430 (56) | 1327 (52) | <0.001 |
| Male; biological marker | ||||
| HIV+ | 2 | 1 (50) | 1 (50) | NA |
| CT and/or NG | 10 | 8 (80) | 6 (60) | NA |
| Subtotal | 12 | 9 (75) | 7 (58) | NA |
| Male; no biological marker | 2561 | 1421 (56) | 1320 (52) | <0.001 |
| Females | 2166 | 480 (22) | 489 (23) | 0.655 |
| Female; biological marker | ||||
| HIV+ | 2 | 0 (0) | 0 (0) | NA |
| CT and/or NG | 28 | 6 (21) | 9 (32) | NA |
| Pregnant | 20 | 9 (47) | 13 (68) | 0.109 |
| Subtotal | 49 | 15 (31) | 22 (45) | 0.020 |
| Female; no biological marker | 2117 | 465 (22) | 467 (22) | 0.920 |
| Total | 4739 | 1910 (40) | 1816 (38) | 0.004 |