Table 1.
Demographic Characteristics and Smoking-related Variables
| Variable | HIV- (full sample; n=1,807) | HIV- (matched sample; n=199) | HIV+ (n=131) | Total Matched Sample (N=330) | p-value b |
|---|---|---|---|---|---|
| Demographic variables | |||||
| Female sex (n, %) | 801, 44%a | 51, 26% | 39, 30% | 90, 27% | 0.41 |
| African American race (n, %) | 608, 34% a | 143, 72% | 103, 79% | 246, 75% | 0.17 |
| Education HS/GED or less (n, %) | 545, 30% a | 112, 56% | 79, 60% | 191, 58% | 0.47 |
| Income ≤ $35,000 (n, %) | 814, 46% a | 124, 64% | 113, 86% | 237, 72% | <0.001 |
| Age | 45.4 (11.3) a | 47.6 (10.2) | 48.0 (9.9) | 47.8 (10.0) | 0.73 |
| Body Mass Index | 28.7 (6.3) a | 28.2 (6.1) | 27.9 (7.3) | 28.1 (6.6) | 0.72 |
| Smoking-related variables | |||||
| Cigarettes per day | 18.5 (7.4) a | 14.9 (6.2) | 12.7 (7.3) | 14.1 (6.8) | 0.003 |
| Nicotine Dependence | 5.2 (2.0) a | 5.0 (1.9) | 4.7 (2.0) | 4.8 (1.9) | 0.18 |
| Cotinine, ng/ml | 245.9 (116.8) a | 255.7 (127) | 174.9 (127.1) | 223.6 (132.9) | <0.001 |
| 3-HC, ng/ml | 89.4 (57.5) a | 80.1 (57.7) | 73.1 (59.3) | 77.9 (58.4) | 0.23 |
| NMR, ng/ml | 0.38 (0.21) a | 0.34 (0.23) | 0.47 (0.3) | 0.39 (0.26) | <0.001 |
| Characteristics for HIV sample only | |||||
| ART adherence past 2 weeks (%, range) | 99%, 86–100% | ||||
| % Undetectable Viral Load (<50 copies/ml; n, %) | 105 (80%) | ||||
| Plasma CD4 Count (cells/mm3) | 714.4 (341.6) | ||||
| Mode of HIV transmission (n, % sex) | 121, 92% | ||||
| History of HCV (n, %) | 12, 9% | ||||
Note: Unless otherwise noted, values are mean (SD); BMI = Body Mass Index.
a
p<0.05 when comparing full sample to HIV-infected sample;
b
p-value is for the comparison between the matched HIV-infected and –uninfected samples