Table 4

Multivariate predictors of Staphylococcus aureus colonization adjusted for clustering by community (N = 1,707)

Multivariable OR (95% CI)

P-value

Year of swab

0.71

2003–04

1.0

2006–07

0.95 (0.71–1.26)

Age group

<0.001

<6 months

0.61 (0.34–1.08)

6–<12 months

0.39 (0.24–0.64)

1–<2 years

0.35 (0.23–0.54)

2–<3 years

0.45 (0.28–0.73)

3–<4 years

0.53 (0.33–0.86)

4–<5 years

0.70 (0.44–1.11)

≥5 years

1.0

Female

0.83 (0.63–1.10)

0.20

Race/ethnicity

0.99

White non-Hispanic

1.0

Black non-Hispanic

0.96 (0.49–1.90)

Hispanic

0.95 (0.51–1.76)

Other

0.90 (0.46–1.77)

Median household income in community

0.89

<$40,000

0.99 (0.51–1.93)

$40,000–$54,999

1.14 (0.67–1.94)

$55,000–$69,999

1.11 (0.67–1.84)

≥$70,000

1.0

% community members with <high school educational level

0.65

<5%

0.99 (0.53–1.87)

5–<10%

0.76 (0.45–1.27)

10–<15%

0.87 (0.57–1.32)

≥15%

1.0

Colonization with Streptococcus pneumoniae

0.92 (0.67–1.27)

0.62

Antibiotics in past 2 months

0.005

Amoxicillin-clavulanate/cephalosporins/mupirocin/TMP-SMX

0.57 (0.33–0.97)

Clindamycin/macrolides

0.51 (0.24–1.08)

Amoxicillin/penicillin

0.54 (0.35–0.84)

No antibiotics

1.0

Lee et al. BMC Infectious Diseases 2009 9:110   doi:10.1186/1471-2334-9-110