Table 2

Carriage of a mupirocin- or chlorhexidine-resistant S. aureus strain at baseline by participant factors

Participant factorNo. of participants (n = 1,089) (%)No. of participants with mupirocin-resistant strain (n = 23) (%)No. of participants with mupirocin-susceptible strain (n = 1,066) (%)OR (95% CI)P valueNo. of participants with chlorhexidine-resistant strain (n = 10) (%)No. of participants with chlorhexidine-susceptible strain (n = 1,079) (%)OR (95% CI)P value
Female633/1,089 (58)10/23 (43)623/1,066 (58)0.55 (0.24–1.26)0.207/10 (70)626/1,079 (58)1.69 (0.43–6.58)0.53
African-Americana739/1,083 (68)18/23 (78)721/1,060 (68)1.69 (0.62–4.60)0.374/10 (40)735/1,073 (69)0.31 (0.09–1.09)0.08
Median age (yr) (range)7.3 (0.5–70)2.5 (0.6–45.8)7.6 (0.5–70)NAd0.052.5 (1.6–48.8)7.4 (0.5–70)NA0.56
Health insurance: government issued or self-pay557/791 (70)15/17 (88)542/774 (70)3.21 (0.73–14.15)0.182/6 (33)555/785 (71)0.21 (0.04–1.14)0.07
Site of skin infection
    Head and neck91 (8)3/23 (13)88/1,064 (8)1.66 (0.49–5.71)0.430/10 (0)91/1,077 (8)NA1.00
    Trunk211 (19)8/23 (35)203/1,064 (19)2.26 (0.95–5.41)0.102/10 (20)209/1,077 (19)1.04 (0.22–4.93)1.00
    Groin or buttock442 (41)6/23 (26)436/1,064 (41)0.51 (0.20–1.30)0.205/10 (50)437/1,077 (41)1.47 (0.42–5.09)0.54
    Upper extremity111 (10)3/23 (13)108/1,064 (10)1.33 (0.39–4.54)0.721/10 (10)110/1,077 (10)0.98 (0.12–7.78)1.00
    Lower extremity301 (28)6/23 (26)295/1,064 (28)0.92 (0.36–2.36)1.002/10 (20)299/1,077 (28)0.65 (0.14–3.08)0.74
Comorbid health conditionb260/483 (54)6/9 (67)254/474 (54)1.73 (0.43–7.01)0.524/7 (57)256/476 (54)1.15 (0.25–5.18)1.00
Skin disorderc280/818 (34)7/15 (47)273/803 (34)1.70 (0.61–4.73)0.413/8 (38)277/810 (34)1.16 (0.27–4.87)1.00
Systemic antibiotic use in prior year466/806 (58)14/15 (93)452/791 (57)10.50 (1.37–80.24)0.0066/8 (75)460/798 (58)2.20 (0.44–10.99)0.48
Emergency Department or urgent care visit in prior year198/483 (41)7/9 (78)191/474 (40)5.19 (1.07–25.23)0.044/7 (57)194/476 (41)1.94 (0.43–8.76)0.45
Hospitalization in prior year133/815 (16)6/15 (40)127/800 (16)3.53 (1.24–10.10)0.020/8 (0)133/807 (17)NA0.37
Surgery in prior year92/483 (19)1/9 (11)91/474 (19)0.53 (0.07–4.26)1.003/7 (43)89/476 (19)3.26 (0.72–14.83)0.13
SSTI in prior year355/813 (44)9/15 (60)346/798 (43)1.96 (0.69–5.56)0.295/8 (63)350/805 (44)2.17 (0.51–9.13)0.31
Household contact SSTI in prior year348/813 (43)12/15 (80)336/798 (42)5.50 (1.54–19.64)0.0063/8 (38)345/805 (43)0.80 (0.19–3.37)1.00
Health care worker in household216/817 (26)6/15 (40)210/802 (26)1.88 (0.66–5.34)0.243/8 (38)213/809 (26)1.68 (0.40–7.09)0.44
Pet in household351/818 (43)2/15 (13)349/803 (44)0.20 (0.05–0.89)0.034/8 (50)347/810 (43)1.33 (0.33–5.37)0.73
  • a Number of African-American and biracial participants (739) compared to the number of participants in all other racial groups: Caucasian (338), Asian (4), American Indian (2).

  • b Comorbid health conditions surveyed included asthma, allergies, seizures, heart disease, high blood pressure, diabetes, cancer, sickle cell disease, cystic fibrosis, dialysis, HIV/AIDS, gastroesophageal reflux disease (GERD), depression/bipolar disorder, and attention deficit disorder (ADD).

  • c Skin disorders surveyed included eczema, acne, psoriasis, and folliculitis.

  • d NA, not applicable.