| Characteristics | Cases | Controls | p-Value | |
| Age at first sex (yrs): | Mean ± SD | 24.1 ± 4.0 | 28.1 ± 4.6 | 0.002 |
| H/O Pre-marital sex: | Yes | 14/21 (66.7%) | 4/37 (10.8%) | 0.00001 |
| No | 7/21 (33.3%) | 33/37 (89.2%) | ||
| Partners of pre-marital sex: | Sex workers | 8/14 (57.1%) | 1/4 (25.0%) | 0.36 |
| Friends/Relatives | 3/14 (21.4%) | 3/4 (75.0%) | ||
| Current spouse | 1/14 (7.1%) | --- | ||
| Others | 2/14 (14.3%) | --- | ||
| Condom use during pre-marital sex: | Always | --- | 2/4 (50.0%) | 0.04 |
| Mostly | 1/14 (7.1%) | --- | ||
| Occasional | 6/14 (42.9%) | --- | ||
| Never | 7/14 (50.0%) | 2/4 (50.0%) | ||
| Condom use with spouse: | Always | 7/21 (33.3%) | 2/37 (5.4%) | 0.05 |
| Mostly | 1/21 (4.8%) | 3/37 (8.1%) | ||
| Occasional | 3/21 (14.3%) | 6/37 (16.2%) | ||
| Never | 10/21 (47.6%) | 26/37 (70.3%) | ||
| H/O Extra-marital sex: | Yes | 5/21 (23.8%) | 1/37 (2.7%) | 0.02 |
| No | 16/21 (76.2%) | 36/37 (97.3%) | ||
| Ever had any sign/symptom of STI | Yes | 2/21 (9.5%) | 2/37 (5.4%) | 0.61 |
| No | 19/21 (90.5%) | 35/37 (94.6%) | ||