Generalised estimation equation (GEE) estimates for the effect of condom use on incident infections with Chlamydia, Gonorrhoea and Trichomoniasis
| Predictor variable | Point estimate | 95% CI | p Value |
|---|---|---|---|
| Model 1: Effects of consistent condom use only | |||
| Consistent condom use | 0.75 | 0.42 to 1.32 | 0.32 |
| Male gender | 0.81 | 0.44 to 1.50 | 0.50 |
| Less than 20 years of age† | 2.00 | 0.99 to 4.03 | 0.05 |
| 20–24 years of age† | 1.11 | 0.57 to 2.17 | 0.76 |
| Past sexually transmitted infections | 2.96 | 1.58 to 5.56 | 0.0001 |
| Model 2: Effects of consistent and correct condom use | |||
| Consistent and correct condom use | 0.41 | 0.19 to 0.90 | 0.026 |
| Male gender | 0.83 | 0.45 to 1.53 | 0.55 |
| Less than 20 years of age† | 2.05 | 1.01 to 4.14 | 0.047 |
| 20–24 years of age† | 1.12 | 0.57 to 2.17 | 0.75 |
| Past sexually transmitted infections | 2.98 | 1.61 to 5.52 | 0.0005 |
†The reference group consists of persons 25 years of age or older.