Table 2 Multivariate analysis of potential risk factors related to norovirus outbreaks in Hong Kong elderly homes
Factors | RR | 95% CI | P value |
|---|---|---|---|
Home capacity (per 30-resident increment) | 1.4 | 1.3-1.5 | <0.0001 |
Staff-to-resident ratio (per 1/30 increment) | 1.2 | 1.1-1.3 | <0.0001 |
% residents older than 75 (per additional 10%) | 2.1 | 0.7-6.1 | 0.2 |
Wheelchair accessibility | Â | Â | Â |
   No | 1.0 |  |  |
   Yes | 2.0 | 1.3-3.2 | 0.002 |
Partition between beds | Â | Â | Â |
   No | 1.0 |  |  |
   Yes | 0.6 | 0.4-0.8 | 0.002 |