Table 2.
Generalized estimated equation analysis of behaviors during follow-up as predictors of over 90% adherence to pre-exposure prophylaxis by pill counting (N=993).a
| Factors | Total, n (%) | Adherence >90%, n (%) | Multivariate analysis | |||||
| aORb (95% CI) | P-value | |||||||
| Age (years) |
|
|
|
|
||||
|
|
18-24 | 230 (23.2) | 146 (63.5) | Reference |
|
|||
|
|
25-34 | 501 (50.5) | 333 (66.5) | 1.3 (1.0 to 1.7) | .028 | |||
|
|
35-65 | 262 (26.4) | 179 (68.3) | 1.3 (1.0 to 1.8) | .036 | |||
| Education | ||||||||
|
|
High school or below | 175 (17.6) | 113 (64.6) | Reference |
|
|||
|
|
College and above | 818 (82.4) | 545 (66.6) | 1.3 (1.0 to 1.7) | .037 | |||
| Sexual role with male | ||||||||
|
|
Oral | 57 (5.7) | 30 (52.6) | Reference |
|
|||
|
|
Top | 341 (34.3) | 233 (68.3) | 2.0 (1.4 to 2.8) | <.001 | |||
|
|
Bottom | 279 (28.1) | 193 (69.2) | 2.1 (1.5 to 3.0) | <.001 | |||
|
|
Versatile | 316 (31.8) | 202 (63.9) | 1.8 (1.2 to 2.6) | .002 | |||
| Main venue to seek male sex partners |
|
|
||||||
|
|
Others | 256 (25.8) | 181 (70.7) | Reference |
|
|||
|
|
GSN appsc | 737 (74.2) | 477 (64.7) | 0.8 (0.6 to 1.0) | .037 | |||
| Sexual behaviors in past 3 months | ||||||||
|
|
Number of male sex partners | |||||||
|
|
|
0-1 | 303 (30.5) | 188 (62.0) | Reference |
|
||
|
|
|
2-3 | 336 (33.8) | 237 (70.5) | 1.2 (1.0 to 1.5) | .050 | ||
|
|
|
≥4 | 354 (35.6) | 233 (65.8) | 1.3 (1.1 to 1.7) | .012 | ||
|
|
Number of male casual sex partners | |||||||
|
|
|
0 | 474 (47.7) | 309 (65.2) | Reference |
|
||
|
|
|
1-3 | 283 (28.5) | 198 (70.0) | 1.1 (0.9 to 1.3) | .289 | ||
|
|
|
≥4 | 236 (23.8) | 151 (64.0) | 1.3 (1.0 to 1.6) | .054 | ||
|
|
Number of CAId | |||||||
|
|
|
0 | 522 (52.6) | 343 (65.7) | Reference |
|
||
|
|
|
1-2 | 135 (13.6) | 85 (63.0) | 1.0 (0.8 to 1.2) | .816 | ||
|
|
|
≥3 | 336 (33.8) | 230 (68.5) | 1.2 (1.0 to 1.5) | .041 | ||
| Substance use | ||||||||
|
|
|
No | 559 (56.3) | 514 (91.9) | Reference |
|
||
|
|
|
Yes | 434 (43.7) | 401 (92.4) | 0.7 (0.5 to 0.9) | .014 | ||
| PrEPe dosing regimens |
|
|
|
|||||
|
|
Event-driven regimen | 466 (46.9) | 245 (52.6) | Reference |
|
|||
|
|
Daily regimen | 527 (53.1) | 413 (78.4) | 3.8 (3.1 to 4.6) | <.001 | |||
aAll estimates were from generalized estimating equation logistic models, adjusted for ethnic, local residents, and annual income.
baOR: adjusted odds ratio.
cGSN: geosocial networking.
dCAI: condomless anal intercourse.
ePrEP: pre-exposure prophylaxis.