Table 3 Predictors of risk of recurrent SSTI in univariate and multivariate Cox regression models

HAART

0.67 (0.31–1.44)

0.30

Trimethoprim-sulfamethoxazole

0.73 (0.28–1.91)

0.52

Azithromycin

1.38 (0.48–3.98)

0.55

Age (cont)

0.99 (0.96–1.03)

0.71

STD (any)

1.06 (0.49–2.27)

0.88

Chlamydia

1.18 (0.16–8.77)

0.87

Gonorrhea

4.96 (0.65–37.7)

0.12

Syphilis

0.49 (0.07–3.59)

0.48

Human papilloma virus (clinical)

1.58 (0.60–4.17)

0.35

Human papilloma virus (Pap)

1.12 (0.43–2.92)

0.82

Trichomonas

0.45 (0.06–3.33)

0.44

Catheter

4.62 (1.08–19.7)

0.04

6.50 (1.47–28.7)

0.01

Medicaid

0.64 (0.30–1.37)

0.25

End stage renal disease

0.70 (0.16–2.93)

0.62

Cancer

0.51 (0.07–3.73)

0.51

Diabetes

1.03 (0.39–2.69)

0.96

Hepatitis B

1.27 (0.38–4.20)

0.69

Hepatitis C

0.91 (0.32–2.61)

0.86

Incarceration

0.22 (0.03–1.65)

0.14

Other chronic liver disease

2.89 (1.00–8.35)

0.05

3.43 (1.02-11.5)

0.05

Men who have sex with men

0.81 (0.36–1.81)

0.60

IVDU

2.41 (0.98–5.91)

0.06

2.80 (1.02-7.65)

0.05

Male

0.87 (0.42–1.79)

0.71

African-American race

0.34 (0.11–1.00)

0.05

0.12 (0.03-0.41)

<0.01

Chronic skin disease: Any

1.36 (0.66–2.79)

0.41

Psoriasis

0.46 (0.06–3.39)

0.45

Lymphedema

4.12 (1.24–14.1)

0.02

CD4

100+

Reference

<100

1.13 (0.39–3.24)

0.83

Viral load

<1000

Reference

Reference

1000+

1.58

0.22

2.21 (0.99–4.94)

0.05

Initial SSTI type

Abscess

Reference

Furuncle

0.26 (0.03–1.91)

0.19

Cellulitis

0.66 (0.28–1.55)

0.34

Incision and drainage performed on initial SSTI

1.69 (0.82–3.47)

0.15

Initial SSTI S. aureus

2.10 (0.93–4.72)

0.07

Initial SSTI MRSA

2.21 (0.90–5.40)

0.08