TABLE 5.
Negative Binomial Regression of Number of Months in HIV Primary Care
| Variable | Coefficient | 95% Confidence Interval |
|---|---|---|
| CD4 cell count (cell/mm3) at entry | ||
| >500 (reference) | — | — |
| 351–500 | 1.03 | (0.98–1.07) |
| 201–350 | 1.02 | (0.97–1.07) |
| <201 | 1.04 | (0.98–1.09) |
| Gender | ||
| Female (reference) | — | — |
| Male | 0.91* | (0.87–0.95) |
| Race/ethnicity | ||
| White (reference) | — | — |
| Black | 1.01 | (0.97–1.06) |
| Hispanic | 1.09* | (1.04–1.15) |
| Other/unknown | 1.04 | (0.92–1.12) |
| HIV transmission | ||
| MSM (reference) | — | — |
| HET | 0.97 | (0.93–1.02) |
| IDU | 0.85* | (0.80–0.89) |
| Other/unknown | 0.64* | (0.60–0.68) |
| Age in 2000 (yr) | ||
| < 30 (reference) | — | — |
| 31–10 | 1.02 | (0.98–1.06) |
| 41–50 | 1.11* | (1.06–1.17) |
| 51 + | 1.19† | (1.11–1.27) |
| Enrollment year | ||
| 2000 (reference) | — | — |
| 2001 | 0.92* | (0.87–0.97) |
| 2002 | 0.89* | (0.84–0.94) |
| 2003 | 0.80* | (0.76–0.85) |
| 2004 | 0.68* | (0.64–0.73) |
| 2005 | 0.57* | (0.53–0.61) |
| 2006 | 0.41* | (0.39–0.44) |
The analysis also included HIVRN site (results not shown). Entries are exponentiated coefficients (incidence rate ratios).
*
P < 0.001.
†
P < 0.01.
MSM indicates men who have sex with men; IDU, injection drug use; HET, heterosexual HIV transmission; HIVRN, HIV Research Network.