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Table 1 Demographic and HIV-specific characteristics of the patient cohort

From: Emergency department utilization by HIV-positive adults in the HAART era

Demographic or HIV-specific variable Full sample (N = 356) No ED visit (N = 284) ED visit (N = 72)
Mean age (SD) 42.7 (8.5) 42.8 (8.7) 41.9 (7.6)
Gender (% male) 77.2 77.8 75.0
Income level (%)    
 Below poverty level 45.8 40.8 65.3
 1–2× poverty level 24.7 25.4 22.2
 2–3× poverty level 12.4 13.0 9.7
 >3× poverty level 14.0 17.3 1.4
 Not recorded 3.1 3.5 1.4
Race (% non-Caucasian) 47.5 45.1 56.9
Mean years since HIV diagnosis (SD) 8.5 (5.9) 8.2 (5.9) 9.8 (5.8)
Mean years on antiretroviral therapy (SD) 3.5 (3.2) 3.6 (3.3) 2.9 (3.0)
On HAART in 2006 (% yes) 81.5 82.4 77.8
HAART interrupted/discontinued in 2006 (% yes) 7.3 6.3 11.1
Peak viral load on record, copies/ml (%)    
 <400 18.0 19.0 13.9
 401–1,000 2.2 2.4 1.4
 1,001–100,000 36.2 37.0 33.3
 >100,000 38.5 37.7 41.7
 Unknown 5.1 3.9 9.7
Mean viral load in 2006, copies/ml (%)    
 <400 53.1 57.4 36.1
 401–1000 2.8 3.1 1.4
 1,001–100,000 19.9 18.0 27.8
 >100,000 9.3 8.1 13.9
 Unknown 14.9 13.4 20.8
Lowest CD4 count on record, cells/ml (%)    
 0–200 41.3 40.5 44.4
 201–350 25.8 26.8 22.3
 >350 28.4 29.6 23.6
 Unknown 4.5 3.1 9.7
Mean CD4 count in 2006, cells/ml (%)    
 0–200 13.8 13.0 16.7
 201–350 17.4 16.9 19.4
 >350 54.5 57.4 43.1
 Unknown 14.3 12.7 20.8