In-depth interview respondents: individual reliability of reported sex in 1998–2000 in-depth interviews, assisted self-completion questionnaires (ASCQs) and face to face questionnaires (FFQs), with validation using biological markers
| Reported vaginal intercourse | Number (%) of males | Number (%) of females | Total (%) |
|---|---|---|---|
| *Italicised figures represent results that are inconsistent and/or invalid given biological marker results. | |||
| Biological marker—positive | n = 2 | n = 9 | n = 11 |
| Consistently reported | 1 (50) | 1 (11) | 2 (18) |
| Denied earlier and reported later | 1 (50)* | 4 (44) | 5 (46) |
| Consistently denied | 1 (11) | 1 (9) | |
| Inconsistently reported | 3 (33) | 3 (27) | |
| Biological marker—negative | n = 29 | n = 33 | n = 62 |
| Consistently reported | 7 (24) | 1 (3) | 8 (13) |
| Denied earlier and reported later | 5 (17) | 1 (3) | 19 (31) |
| Consistently denied | 7 (24) | 8 (24) | 15 (24) |
| Inconsistently reported | 10 (35) | 10 (30) | 20 (32) |