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Volume 16, Number 5—May 2010

Research

Methicillin-Resistant Staphylococcus aureus Carriage and Risk Factors for Skin Infections, Southwestern Alaska, USA

A. Michal Stevens, Thomas W. HennessyComments to Author , Henry C. Baggett, Dana Bruden, Debbie Parks, and Joseph Klejka
Author affiliations: Centers for Disease Control and Prevention, Anchorage, Alaska, USA (A.M. Stevens, T. Hennessy, D. Bruden, D. Parks); Centers for Disease Control and Prevention, Atlanta, Georgia, USA (H.C. Baggett); Yukon Kuskokwim Heath Corporation, Bethel, Alaska, USA (J. Klejka)

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Table 1

Characterization of study participants by Staphylococcus aureus carriage group, Alaska, 2000*

Characteristic MRSA carriers, n = 41 MSSA carriers, n = 85 Non–S. aureus carriers, n = 190 Total, n = 316 p value†
Male sex 23 (56.1) 40 (47.1) 94 (49.5) 157 (49.7) 0.6
Median age, y (range)
13 (0–77)
16 (1–73)
22 (0–85)
18 (0–85)

Age group, y
<5 10 (24.4) 17 (20.0) 29 (15.3) 56 (17.7) 0.0456
5–19 15 (36.6) 35 (41.2) 57 (30.0) 107 (33.9)
20–39 9 (22.0) 20 (23.5) 60 (31.6) 89 (28.2)
40–64 6 (14.6) 9 (10.6) 32 (16.8) 47 (14.9)
>64
1 (2.4)
4 (4.7)
12 (6.3)
17 (5.4)

Household member nasal carriage status
>1 MRSA+ 32 (78.0) 25 (29.4) 32 (16.8) 89 (28.2) <0.0001

*Values are no. (%) except as indicated. MRSA, methicillin-resistant S. aureus; MSSA, methicillin-susceptible S. aureus.
†χ2 tests were used to detect differences in carriage groups by sex and household member status; nonparametric 1-way analysis of variance software (SAS Institute, Cary, NC, USA) was used to detect differences in carriage groups by age.

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