Table 2.
Unadjusted and adjusted risk ratios of PrEP discontinuation and loss to follow up among clients receiving PrEP at the Center, n=3,121 starting between January 1, 2014 and December 31, 2017
| Discontinued | Lost to Follow Up | |||||||
|---|---|---|---|---|---|---|---|---|
| RR | 95% CI | aRR* | 95% CI | RR | 95% CI | aRR* | 95% CI | |
| Age | ||||||||
| 18–24 | 2.4 | (1.7, 3.4) | 2.8 | (1.9, 4.0) | 1.7 | (1.3, 2.4) | 1.8 | (1.3, 2.6) |
| 25–30 | 1.5 | (1.1, 2.0) | 1.6 | (1.2, 2.2) | 1.2 | (0.9, 1.6) | 1.3 | (1.0, 1.7) |
| 31–40 | 1.3 | (0.9, 1.7) | 1.3 | (1.0, 1.9) | 1.1 | (0.8, 1.4) | 1.1 | (0.8, 1.4) |
| 41–50 (ref) | 1.0 | -- | 1.0 | -- | 1.0 | -- | 1.0 | -- |
| 51–76 | 1.4 | (0.9, 2.1) | 1.4 | (0.9, 2.2) | 0.8 | (0.5, 1.2) | 0.8 | (0.5, 1.2) |
| Gender | ||||||||
| Cis man (ref) | 1.0 | -- | 1.0 | -- | 1.0 | -- | 1.0 | -- |
| Trans woman | 1.5 | (1.0, 2.4) | 0.8 | (0.4, 1.5) | 0.7 | (0.4, 1.1) | 0.6 | (0.3, 1.1) |
| Other gender | 1.3 | (0.7, 2.5) | 1 | (0.5, 2.1) | 1.2 | (0.7, 2.5) | 1.4 | (0.7, 2.6) |
| Race/ethnicity | ||||||||
| White (ref) | 1.0 | -- | -- | -- | 1.0 | -- | -- | -- |
| Asian/PI | 0.7 | (0.5, 1.0) | -- | -- | 1.0 | (0.7, 1.3) | -- | -- |
| Black | 1.0 | (0.7, 1.4) | -- | -- | 0.9 | (0.6, 1.2) | -- | -- |
| Hispanic/Latino | 1.0 | (0.8, 1.2) | -- | -- | 0.9 | (0.7, 1.0) | -- | -- |
| Other | 0.8 | (0.6, 1.2) | -- | -- | 1.1 | (0.8, 1.5) | -- | -- |
| Sexual orientation | ||||||||
| Gay (ref) | 1.0 | -- | 1.0 | 1.0 | -- | 1.0 | ||
| Bisexual | 1.0 | (0.8, 1.4) | 1.0 | (0.7, 1.3) | 0.9 | (0.7, 1.2) | 0.8 | (0.6, 1.1) |
| Other | 1.5 | (1.0, 2.3) | 1.5 | (0.9, 2.5) | 0.7 | (0.4, 1.0) | 0.7 | (0.4, 1.3) |
| Baseline insurance | ||||||||
| Medi-Cal, or other government PrEP program (ref) | 1.0 | -- | 1.0 | -- | 1.0 | -- | 1.0 | -- |
| Private | 1.4 | (1.2, 1.7) | 1.4 | (1.2, 1.7) | 1.7 | (1.4, 2.0) | 1.7 | (1.4, 2.0) |
| None | 5.5 | (4.0, 7.7) | 4.5 | (3.2, 6.4) | 3.4 | (2.5, 4.7) | 3.4 | (2.4, 4.8) |
| Baseline housing status | ||||||||
| Not homeless (ref) | 1.0 | -- | 1.0 | -- | 1.0 | -- | 1.0 | -- |
| Homeless | 2.1 | (1.6, 2.7) | 2.1 | (1.5, 2.8) | 1.2 | (0.9, 1.6) | 1.4 | (1.0, 1.9) |
| PrEP start year | ||||||||
| 2014–2015 | 2.7 | (2.1, 3.5) | 2.6 | (2.0, 3.5) | 1.1 | (0.6, 1.4) | 1.1 | (0.6, 1.4) |
| 2016 | 2.4 | (2.0, 2.9) | 2.1 | (1.7, 2.6) | 1.5 | (1.3, 1.8) | 1.4 | (1.1, 1.7) |
*
166 results were omitted due to missing values; effective sample size was 2,955