Table 3.
Characteristics Included in the Multivariable Logistic Regression Model of Being in a Cluster, Among 1,027 Persons with Sequences Sampled at Vanderbilt Comprehensive Care Clinic, 2011–2015
| Characteristic | Total, n (%) | In cluster, n (%) | Multivariable, OR (95% CI)a |
|---|---|---|---|
| Total, row% | 1,027 | 400 (38.9) | |
| Sex and risk, n = 966 | |||
| Female–WSM | 179 (17) | 50 (13) | Ref |
| PWID | 42 (4) | 12 (3) | 1.15 (0.52–2.55) |
| Male–HET | 126 (12) | 44 (11) | 1.57 (0.92–2.66) |
| Male–MSM | 619 (60) | 270 (68) | 1.79 (1.21–2.65) |
| Race/ethnicity | |||
| White | 471 (46) | 195 (49) | Ref |
| Black/AA | 473 (46) | 176 (44) | 0.71 (0.53–0.97) |
| Latino | 53 (5) | 19 (5) | 0.82 (0.44–1.54) |
| Other/unknown | 30 (3) | 10 (3) | 0.64 (0.28–1.50) |
| Age | |||
| ≥30 years | 663 (65) | 210 (53) | Ref |
| <30 years | 364 (35) | 190 (48) | 2.48 (1.85–3.31) |
| Sequence year, median (IQR) | 2013 (2011–2014) | 2013 (2011–2014) | 0.89 (0.80–0.98) |
| Area of residence | |||
| Nashville metro | 469 (46) | 184 (46) | Ref |
| Middle Tennessee | 463 (45) | 190 (48) | 1.05 (0.79–1.40) |
| Other | 95 (9) | 26 (7) | 0.49 (0.29–0.84) |
| CD4 lymphocyte >500, cells/μL | 301 (30) | 131 (33) | 1.40 (1.03–1.90) |
| HIV RNA viral load, median log10 copies/mL (IQR) | 4.5 (3.7–5.0) | 4.5 (3.9–5.1) | 1.19 (1.03–1.38) |
a
All listed variables were retained in the multivariable model: sex/transmission risk, race/ethnicity, age, sequence year, area of residence, CD4 lymphocyte count, and HIV RNA viral load. Bold estimates are statistically significant (p < .05).
AA, African-American; CI, confidence interval; OR, odds ratio; WSM, women who have sex with men.