Items | Univariate P-value | OR (95%CI) | Multivariate P-value | OR (95%CI) |
---|---|---|---|---|
Age (years) | 0.99 | 1.00 (0.96–1.05) | – | – |
Age group | ||||
  ≤ 20 | 0.045 | 1 | 0.10 | 1 |
 21–30 | 0.019 | 0.57 (0.36–0.91) | 0.015 | 0.54 (0.33–0.89) |
 31–40 | 0.96 | 1.02 (0.45–2.34) | 0.48 | 0.71 (0.28–1.80) |
  ≥ 45 | 0.53 | 1.64 (0.35–7.62) | 0.76 | 0.78 (0.15–4.06) |
Residential region |  |  | – | – |
 Eastern China | 0.24 | 1 |  |  |
 Central China | 0.94 | 1.50 (0.93–2.39) |  |  |
 Western China | 0.53 | 1.17 (0.71–1.94) |  |  |
Solitary | 0.89 | 1.03 (0.68–1.56) | – | – |
Education |  |  | – | – |
 Middle school or below | – | – |  |  |
 High school or equal | 0.55 | 0.79 (0.37–1.70) |  |  |
 Undergraduate | 0.64 | 1.16 (0.63–2.12) |  |  |
 Graduate or above | 0.62 | 1 |  |  |
Occupation |  |  | – | – |
 Students | 0.58 | 1 |  |  |
 Employees | 0.90 | 0.97 (0.65–1.47) |  |  |
 Unemployed | 0.32 | 1.51 (0.67–3.42) |  |  |
Annual income ($) | ||||
  < 7500 | 0.001 | 1 | 0.001 | 1 |
 7500–15,000 | 0.14 | 0.64 (0.36–1.15) | 0.32 | 0.74 (0.40–1.36) |
 15,000–30,000 | 0.014 | 1.99 (1.15–3.43) | 0.008 | 2.22 (1.24–4.00) |
 30,000–450,000 | 0.83 | 0.86 (0.20–3.62) | 0.93 | 0.94 (0.22–4.06) |
  > 450,000 | 0.002 | 4.50 (1.78–11.38) | 0.003 | 4.56 (1.68–12.38) |
No. male anal sex partners in the past 6 months |  |  | – | – |
 0–5 | 0.60 | 1 |  |  |
 6–10 | 0.40 | 0.64 (0.23–1.78) |  |  |
  > 10 | 0.57 | 0.66 (0.16–2.76) |  |  |
Had male sex partners with HIV positive | 0.71 | 1.26 (0.38–4.12) | – | – |
HIRI-MSM risk score | 0.81 | 1.00 (0.97–1.04) | – | – |
Having condomless anal sex within the last 6 months | 0.65 | 1.10 (0.72–1.68) | – | – |