Table 1 Univariate and multivariate analysis of risk factors associated with S. aureus nasal carriage among 295 volunteers at the campus of Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou
Characteristic | The healthy people (n = 295), n (%) | |||||
|---|---|---|---|---|---|---|
Carriers (n = 73) n (%) | Non-carriers (n = 222) n (%) | Univariate | Multivariate logistic | |||
P value | OR (95% CI) | P value | OR (95% CI) | |||
Sex | ||||||
 Male | 44 (32.6) | 91 (67.4) | 0.005 | 2.04 (1.27–3.79) | 0.021 | 2.51 (1.29–3.91) |
 Female | 29 (18.1) | 131 (81.9) |  |  |  |  |
Age, years | ||||||
 ≤20 | 41 (33.1) | 8 (66.9) | <0.001 | 0.25 (0.11–0.54) | 0.01 | 3.30 (1.12–9.75) |
 >20–30 | 18 (26.5) | 50 (73.5) | 0.021 | 0.31 (0.11–0.84) | 0.041 | 2.71 (1.15–7.51) |
 ≥30–50 | 8 (17.0) | 39 (83.0) | 0.312 | 0.56 (0.18–1.74) | 0.451 | 1.91 (0.44–4.91) |
 ≥50 | 6 (10.7) | 50 (89.3) |  | 1 |  | 1 |
Antibiotic use in past 1Â month | ||||||
 Yes | 4 (20.0) | 16 (80.0) | 0.612 | 0.75 (0.24–2.31) |  |  |
 No | 69 (25.1) | 206 (74.9) |  |  |  |  |
Regular contact nasal cavity cleaning | ||||||
 Yes | 13 (13.0) | 87 (87.0) | 0.001 | 0.34 (0.17–0.65) | <0.001 | 0.29 (0.15–0.56) |
 No | 59 (30.4) | 135 (69.6) |  |  |  |  |
Hospitalization in past one year | ||||||
 Yes | 4 (36.4) | 7 (63.6) | 0.369 | 1.78 (0.51–6.27) |  |  |
 No | 69 (24.3) | 215 (75.7) |  |  |  |  |
Underlying disease | ||||||
 Yes | 11 (36.7) | 19 (63.3) | 0.891 | 1.05 (0.50–2.21) |  |  |
 No | 62 (23.4) | 203 (76.6) |  |  |  |  |
Household member working in Medical Institutions | ||||||
 Yes | 14 (26.4) | 39 (73.6) | 0.689 | 1.15 (0.58–2.27) |  |  |
 No | 59 (24.4) | 183 (75.6) |  |  |  |  |