Table 4
Odds ratio of being HIV positive when cases consisted of IDUs
| Adjusted odds ratio‡ | |||
|---|---|---|---|
| All women | 1–9 lifetime sexual partners | 10+ lifetime sexual partners | |
| Cases are 94 HIV positive women who shared needles. *p value <0.05; †p value <0.005; ‡adjusted for all the variables in the model; §currently married and living with spouse; ¶excluding London. Figures in bold: p value <0.05 for interactions with lifetime number of sexual partners. | |||
| Age group | |||
| 20–24 | 0.4 (0.1 to 1.7) | 1.0 (0.2 to 4.9) | 0.0 |
| 25–29 | 3.1 (1.4 to 6.8)* | 5.3 (1.6 to 17.9)* | 1.8 (0.6 to 5.4) |
| 30–34 | 4.1 (1.9 to 8.9)† | 4.1 (1.2 to 14.7)* | 5.0 (1.8 to 14.0)† |
| 35–39 | 2.8 (1.3 to 6.3)* | 3.9 (1.1 to 14.3)* | 2.0 (0.7 to 6.4) |
| 40–59 | 1.0 | 1.0 | 1.0 |
| Ever had a termination of pregnancy | |||
| No | 1.0 | 1.0 | 1.0 |
| Yes | 3.3 (2.0 to 5.3)† | 6.7 (3.4 to 13.1)† | 2.2 (1.1 to 4.5)* |
| Marital status | |||
| Currently married§ | 1.0 | 1.0 | 1.0 |
| Cohabiting | 3.0 (1.5 to 5.9)† | 5.2 (1.9 to 13.8)† | 2.5 (1.0 to 6.3) |
| Widowed | 5.5 (1.4 to 22.0)* | 4.6 (0.5 to 42.3) | 12.6 (1.4 to 110.4)* |
| Divorced | 1.9 (0.8 to 4.6) | 3.8 (1.1 to 13.3)* | 1.4 (0.4 to 4.9) |
| Separated | 1.8 (0.6 to 5.5) | 2.9 (0.6 to 14.4) | 1.7 (0.4 to 7.9) |
| Never married | 1.7 (0.9 to 3.4) | 3.8 (1.6 to 9.3)† | 1.1 (0.4 to 2.9) |
| Social class | |||
| I–IIINM | 1.0 | 1.0 | 1.0 |
| IIIM–V | 2.3 (1.3 to 4.0)† | 1.7 (0.8 to 3.5) | 4.1 (1.7 to 9.6)† |
| Other | 1.4 (0.7 to 3.1) | 1.1 (0.4 to 3.1) | 1.8 (0.5 to 5.9) |
| Area of residence | |||
| SE England¶ | 1.0 | 1.0 | 1.0 |
| London | 19.0 (5.8 to 62.6)† | 18.5 (2.4 to 140.5)† | 20.4 (4.5 to 93.0)† |
| Scotland | 26.9 (8.0 to 90.4)† | 40.4 (5.3 to 305.5)† | 16.8 (3.4 to 83.5)† |
| Lifetime number of sexual partners | |||
| 1 | 1.0 | ||
| 2 | 1.1 (0.2 to 5.2) | ||
| 3–4 | 4.2 (1.3 to 13.2)* | N/A | N/A |
| 5–9 | 5.8 (1.9 to 18.4)† | ||
| 10+ | 19.6 (6.4 to 60.0)† | ||
