Table 4 Zero-inflated negative binomial regression model for prevalence of HIV among pregnant women in southwest of China, 2009–2018
Variable | Positive cases (n, %) | Estimate | SE | z value | aOR (95% CI) |
|---|---|---|---|---|---|
Age | |||||
< 35 years | 54 (0.26%) | 1.00 | |||
≥ 35 years | 4 (0.14%) | 0.17 | 0.79 | 0.22 | 1.19 (0.25–5.58) |
Ethnicity | |||||
Other minorities | 28 (0.19%) | 1.00 | |||
Han | 30 (0.33%) | − 1.81 | 0.75 | − 2.40 | 0.16 (0.04–0.72)* |
Marital status | |||||
Married/cohabitating | 47 (0.21%) | 1.00 | |||
Unmarried/widowed/divorced | 11 (0.56%) | 1.03 | 0.43 | 2.39 | 2.81 (1.20–6.54)* |
Education level | |||||
≥ 9 years | 13 (0.19%) | 1.00 | |||
< 9 years | 45 (0.26%) | 0.17 | 0.40 | 0.41 | 1.18 (0.54–2.60) |
Awareness of HIV related knowledge | |||||
No | 11 (0.49%) | 1.00 | |||
Yes | 47 (0.22%) | − 0.04 | 0.56 | − 0.08 | 0.96 (0.32–2.86) |
Primigravidae | |||||
Yes | 22 (0.24%) | 1.00 | |||
No | 36 (0.25%) | 0.03 | 0.48 | 0.07 | 1.04 (0.40–2.65) |
Multiple sexual partners | |||||
No | 48 (0.21%) | 1.00 | |||
Yes | 8 (6.50%) | 0.85 | 0.71 | 1.20 | 2.34 (0.59–9.36) |
Parity | |||||
Nulliparous | 35 (0.28%) | 1.00 | |||
Parous | 18 (0.19%) | 0.14 | 0.61 | 0.23 | 1.15 (0.35–3.78) |
A history of STI | |||||
No | 55 (0.23%) | 1.00 | |||
Yes | 3 (2.20%) | 1.89 | 0.82 | 2.31 | 6.63 (1.33–32.90)* |
Husband’s history of STI | |||||
No | 51 (0.22%) | 1.00 | |||
Yes | 7 (2.18%) | 1.73 | 0.77 | 2.24 | 5.62 (1.24–25.38)* |
A history of drug use | |||||
No | 56 (0.23%) | 1.00 | |||
Yes | 2 (6.45%) | 0.89 | 0.96 | 0.92 | 2.43 (0.37–15.99) |
Husband’s history of drug use | |||||
No | 55 (0.23%) | 1.00 | |||
Yes | 2 (2.02%) | 2.00 | 0.91 | 2.20 | 7.36 (1.25–43.43)* |