Table 3 Risk factors for incidence of STI during follow up: results from cox regression models
Variable | Univariate analysis | p-value | Multivariate analysis | p-value |
|---|---|---|---|---|
HR (95% CI) | HR (95% CI) | |||
Any STI at baseline | 1.61 (1.30-2.00) | - | 1.52 (1.22-1.88) | 0.000 |
Age | ||||
≤25 | 1.64 (1.36-2.00) | <0.001 | 1.40 (1.14-1.74) | 0.001 |
25-34 | 1.19 (0.97-1.46) | 0.100 | 1.10 (0.89-1.37) | 0.370 |
35+ | 1 | - | ||
District | ||||
Rural | 0.93 (0.69-1.25) | 0.628 | - | |
Urban | 1 | - | ||
Employed/income | ||||
No | 1.35 (1.10-1.66) | 0.0038 | - | |
Yes | 1 | - | ||
Level of education | ||||
High school or more | 1 | - | ||
Less than high school | 1.25 (1.06-1.46) | 0.006 | - | |
Contraceptive use | ||||
At least one form of contraceptive1 | 1 | - | ||
None | 1.33 (1.13-1.55) | <0.001 | 1.40 (1.19-1.64) | 0.000 |
Marital status | ||||
Married | 1 | - | ||
Not married | 1.84 (1.49-2.27) | <0.0001 | 1.54 (1.22-1.94) | 0.000 |
Cohabitation status | ||||
Yes | 1 | - | ||
No | 1.43 (1.21-1.68) | <0.0001 | - | |
Condom used during last sexual act | ||||
No | 1.00 (0.86-1.16) | 0.98 | - | |
Yes | 1 | - |