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Table 2 Multivariate analysis of potential risk factors related to norovirus outbreaks in Hong Kong elderly homes

From: Institutional risk factors for norovirus outbreaks in Hong Kong elderly homes: a retrospective cohort study

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    
   No 1.0   
   Yes 2.0 1.3-3.2 0.002
Partition between beds    
   No 1.0   
   Yes 0.6 0.4-0.8 0.002