Table 3

Behaviour changes and association with the risk of HIV infection between baseline and the last follow-up

Behaviour changes*HIV infection status (N, %)Univariate Cox regression analysisMultivariable Cox regression analysis†
NegativeHIVHR95% CIP valueaHR95% CIP value
Change in risk indicators
 Lost 2–3 indicators236 (12.4)7 (5.5)0.560.25 to 1.270.16800.570.25 to 1.290.1822
 Lost 1 indicator525 (27.6)9 (7.1)0.410.19 to 0.860.01820.430.21 to 0.900.0251
 No change in indicators725 (38.1)30 (23.6)ReferenceReference
 Gained 1 indicator325 (17.1)48 (37.8)2.821.78 to 4.460.00012.671.68 to 4.240.0001
 Gained 2–3 indicators91 (4.8)33 (26.0)6.133.73 to 10.080.00014.993.00 to 8.310.0001
Behaviour transition type
 Consistently protective318 (16.7)2 (1.6)ReferenceReference
 Protective to moderate210 (11.0)11 (8.7)4.781.18 to 19.260.02754.791.18 to 19.470.0283
 Protective to fragile77 (4.0)25 (19.7)28.767.66 to 108.050.000123.036.02 to 88.130.0001
 Moderate to protective301 (16.0)1 (0.8)0.640.08 to 5.030.67030.650.08 to 5.160.6912
 Consistently moderate315 (16.6)4 (3.1)1.620.33 to 7.840.54491.520.31 to 7.410.6019
 Moderate to fragile109 (5.7)33 (26.0)34.329.27 to 127.060.000125.486.79 to 95.400.0001
 Fragile to protective219 (11.5)7 (5.5)2.950.68 to 12.670.14572.870.66 to 12.460.1590
 Fragile to moderate237 (12.5)7 (5.5)3.060.71 to 13.170.13162.660.61 to 11.530.1906
 Consistently fragile116 (6.1)37 (29.1)31.438.53 to 115.750.000125.866.92 to 96.570.0001
Total1902127
  • *Two time points (baseline and the last follow-up) were opted to evaluate behaviour changes.

  • †Multivariable Cox regression analysis was adjusted for age, education, marital status, residence time in Tianjin and MSW.

  • aHR, adjusted HR; MSW, male sex worker.