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Table 5 Final model showing relative risk of diarrhoeal disease associated with intervention and key possible confounders

From: Impact on diarrhoeal illness of a community educational intervention to improve drinking water quality in rural communities in Puerto Rico

Predictor variable   RR Lower 95% CI Upper 95%CI P
Intervention system N 1    
  Y 0.318 0.137 0.739 0.008
Number of occupied houses attached to system   1.006 1.001 1.010 0.014
Reported problems with sewage system N     
  Y 2.973 1.539 5.744 0.001
Owns dogs N     
  Y 0.597 0.145 0.962 0.034