Table 6.
Type of analysis | Study groups included | Number of observations* | Explanatory variables included in the model | Adjusted OR | 95 % CI |
---|---|---|---|---|---|
Logistic regression | 1 (HIV screening centres HIV-positive women) | 124 | Age of first sexual intercoursea | 0.86 | 0.72 – 1.02 |
Number of pregnancies | |||||
0 – 2 | 1 | ||||
3 – 5 | 0.95 | 0.31 – 2.86 | |||
6 or more | 0.83 | 0.28 – 2.44 | |||
Abortion | 1.98 | 0.83 – 4.75 | |||
Logistic regression | 2 (HIV screening centres HIV-negative women) | 123 | Agea | 1.11 | 0.95 – 1.31 |
Marital status | |||||
married | 1 | ||||
single | 5.26 | 0.27 – 102.32 | |||
widowed | 4.34 | 0.18 – 105.99 | |||
divorced | § | ||||
Number of pregnancies | |||||
0 – 2 | 1 | ||||
3 – 5 | 1.15 | 0.07 – 18.34 | |||
6 or more | 4.27 | 0.22 – 81.82 | |||
Logistic regression | 3 (Hospitals HIV status unknown) | 502 | Formal employment | 2.08 | 0.74 – 5.88 |
Abortion | 1.65 | 0.53 – 5.14 | |||
≥3 lifetime sexual partners | 1.75 | 0.69 – 4.46 | |||
Plants for vaginal care | 2.85 | 0.75 – 10.82 | |||
Logistic regression | 4 (Health centres HIV status unknown) | 203 | Age of first sexual intercoursea | 0.86 | 0.68 – 1.07 |
Formal employment | 0.30 | 0.06 – 1.50 | |||
GEE | 1, 2 3 and 4 | 886 | Abortion | 1.60 | 0.97 – 2.63 |
≥3 lifetime sexual partners | 1.29 | 0.83 – 1.99 | |||
Chemicals for vaginal care | 0.65 | 0.37 – 1.14 | |||
Logistic regression | 3 and 4 | 643 | Alcohol consumption | 1.76 | 0.80 – 3.86 |
≥3 lifetime sexual partners | 1.58 | 0.72 – 3.46 | |||
Plants for vaginal care | 2.70 | 1.04 – 7.01** |
LSIL+: cytology findings compatible with (pre)cancerous lesions (includes low- and high-grade squamous intraepithelial lesions and carcinoma)
OR odds ratio; 95 % CI 95 % confidence interval of the odds ratio
GEE: generalized estimating equations (population-averaged model; group variable: study group)
aAge was treated as a continuous variable
§ Odds ratio could not be calculated because there were cells without observations
**P-value of Wald test < 0.05