| Acquired MRSA, [n = 85 (%)a] | Did not acquire MRSA, [n = 1682 (%)a] | OR (95 % CI) | p value |
---|---|---|---|---|
Demographics | ||||
 Age, median (range) | 55 (15–109) | 46 (13–109) | 1.03 (1.01–1.04) | <0.001 |
 ≥ 65 years | 28 (32.9) | 273 (16.2) | 2.53 (1.52–4.14) | <0.001 |
 < 65 years | 57 (67.1) | 1409 (83.8) | 1.0 |  |
Gender | ||||
 Male | 59 (69.4) | 1180 (70.2) | 0.96 (0.59–1.62) | 0.88 |
 Female | 26 (30.6) | 502 (29.8) | 1.0 |  |
Ethnicity | ||||
 Chinese | 63 (74.1) | 1197 (71.2) | 1.2 (0.69–2.00) | 0.56 |
 Malay | 9 (10.6) | 202 (12.0) | 0.87 (0.38–1.77) | 0.69 |
 Indian | 7 (8.2) | 157 (9.3) | 0.87 (0.33–1.93) | 0.73 |
 Others | 6 (7.1) | 126 (7.5) | 0.94 (0.33–2.19) | 0.88 |
Patient groups | ||||
 HIV | 32 (37.7) | 647 (38.5) | 0.97 (0.60–1.54) | 0.880 |
 Dermatology | 46 (54.1) | 578 (34.4) | 2.25 (1.42–5.39) | 0.0002 |
 Infectious disease | 7 (8.2) | 457 (27.2) | 0.24 (0.09–0.53) | 0.0001 |
Admission ward | ||||
 Single-bed room | 61 (71.8) | 1223 (72.7) | 0.95 (0.58–1.62) | 0.849 |
 Multi-bed room | 24 (28.2) | 459 (27.3) | 1.0 |  |
Length of stay, days; median (range) | 8 (2–105) | 5 (1–145) | 1.04 (1.02–1.06) | <0.001 |