Table 3. Risk factors associated with methicillin-resistant Staphylococcus aureus (MRSA) nasal colonization in children by multivariate analysis using polytomous logistic regression.
| MRSA Colonization, OR (95% CI)a | ||||||
| <1 year | 1–5 years | >5 years | ||||
| Male | Female | Male | Female | Male | Female | |
| Risk factor | (n = 304) | (n = 273) | (n = 596) | (n = 627) | (n = 702) | (n = 698) |
| Personal risk factors | ||||||
| Antibiotic use in | ||||||
| past 12 months | 4.1 (1.2–14.0)* | 3.0 (1.5–6.1)** | 12.3 (6.5–23.1)*** | 20.3 (10.1–40.8)*** | ||
| Diagnosis of atopic | ||||||
| dermatitis | 7.6 (2.3–24.9)**** | 8.8 (4.0–19.5)*** | 9.7 (3.4–27.7)*** | 5.2 (2.4–11.3)*** | 5.0 (1.6–15.1)** | |
| Chronic disease | 23.0 (1.3–393.5)* | |||||
| Hospitalization in | ||||||
| past 12 months | 11.1 (5.5–22.3)*** | 5.9 (2.7–12.9)*** | ||||
| History of skin/soft | ||||||
| tissue infection | 8.7 (1.7–44.4)** | 3.1 (1.3–7.1)** | 6.4 (2.6–15.5)*** | 1.9 (1.1–3.5)* | 3.5 (1.8–6.8)**** | |
| Household risk factors | ||||||
| Household contact | ||||||
| with hospital staff | 10.8 (2.0–58.3)** | 4.4 (1.5–13.3)** | 3.6 (1.7–7.7)**** | |||
CI, confidence interval; OR, odds ratio.
a
OR (95% CI) was presented as MRSA colonization vs. no. S. aureus colonization; p value of overall model was calculated by the Mantel-Haenszel test.
*p<0.05,
**p<0.01,
***p<0.0001,
****p<0.001.