Table 2.

Final Multivariable Model of Hypothesized Determinants of Staphylococcus aureus Clinical Infection Among Prisoners

Variable	OR (95% CI)
Age, years
18–38	Ref
39–48	3.4 (1.28–8.90)
49–58	0.6 (.16–2.37)
59–71	0.2 (.02–1.72)
BMI
≤24.9	Ref
25.0–29.9	0.8 (.25–2.82)
30.0–34.9	0.9 (.23–3.28)
≥35	1.4 (.34–5.86)
Piercings ever	0.4 (.15–.90)
Shave legs	0.32 (.09–1.16)
Participation in group activities	0.1 (.02–.24)
Diabetes	3.6 (.88–14.8)
Definite history of skin infections	2.7 (1.02–7.34)
Previous antibiotic use	23.33 (7.77–70.84)
Colonization with any S. aureus clonal type	3.26 (1.26–8.45)

Abbreviations: BMI, body mass index; CI, confidence interval; OR, odds ratio; Ref, reference.