Table 2. Multivariate model to identify risk factors (odd’s ratios, OR) for methicillin resistant Staphylococcus aureus.
| Variable | N | Adjusted OR | (95%CI) | p-value |
| MRSA positive related to type of health care setting | ||||
| No admission | 1527 | 1 | – | |
| Acute hospital | 4647 | 0.86 | 0.74–1.01 | 0.069 |
| Nursing home (LTCF) | 560 | 3.53 | 2.79–4.46 | <0.001 |
| Other setting | 110 | 1.43 | 0.93–2.19 | 0.102 |
| Localisation AB prescription prior to sampling (minimum 1 day) | ||||
| Absent | 1519 | 1 | – | |
| Ambulant | 3706 | 0.91 | 0.73–1.14 | 0.425 |
| In hospital | 1619 | 1.62 | 1.30–2.01 | <0.001 |
| Amount of AB use prior to sampling | ||||
| per DDD | 1.32 | 1.25–1.40 | <0.001 | |
| Age category | ||||
| 0–14 | 757 | 1 | – | |
| 15–54 | 1837 | 1.63 | 1.23–2.16 | 0.001 |
| 55–104 | 4250 | 4.32 | 3.32–5.63 | <0.001 |
MRSA: methicillin resistant Staphylococcus aureus; CI: confidence interval; LTCF: long term care facility; AB: antimicrobial (antibiotic); DDD: defined daily dose.