Table 2 Odds ratios of likelihood of emergency department utilization based on abstracted demographic and HIV-specific variables

Demographic variable

 Age

0.99

0.95–1.03

0.56

 Sex

Female

1.36

0.63–2.94

0.44

 Race

Non-Caucasian

0.74

0.38–1.42

0.36

 Income level (1–2× FPL)

Income level (<FPL)

0.58

0.27–1.24

0.16

 Income level (2–3× FPL)

0.36

0.12–1.09

0.07

 Income level (>3× FPL)

0.07

0.008–0.52

0.01

HIV clinical variable

 Years since HIV diagnosis

1.05

0.98–1.11

0.16

 Years on HAART

1.01

0.89–1.15

0.89

 On HAART in 2006

Yes

0.54

0.17–1.75

0.31

 HAART Interrupted in 2006

Yes

1.66

0.48–5.72

0.42

HIV laboratory variable

 Highest viral load on record (401–1,000)

Highest viral load on record (<400 copies/ml)

0.93

0.09–9.73

0.95

 Highest viral load on record (1,001–100,000)

0.93

0.30–2.86

0.90

 Highest viral load on record (>100,000)

0.81

0.24–2.74

0.74

 Mean viral load in 2006 (401–1,000)

Mean viral load in 2006 (<400 copies/ml)

0.79

0.08–7.12

0.79

 Mean viral load in 2006 (1,001–100,000)

3.49

1.26–9.73

0.02

 Mean viral load in 2006 (>100,000)

5.43

1.39–21.21

0.02

 Lowest CD4 count on record (0–200)

Lowest CD4 count on record (>350 cells/ml)

1.14

0.36–3.57

0.82

 Lowest CD4 count on record (201–350)

0.87

0.33–2.27

0.77

 Mean CD4 count in 2006 (0–200)

Mean CD4 count in 2006 (>350 cells/ml)

0.61

0.18–2.07

0.43

 Mean CD4 count in 2006 (201–350)

0.97

0.35–2.69

0.95