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Table 3 Significant Covariates in the Final Logistic Regression Model

From: A prospective study of rural drinking water quality and acute gastrointestinal illness

Covariate Percent Rate of AGII Odds Ratio (95% CI)*
  (N = 619) per 100 /month  
Age    
50+ 31.6 3.1 1.00
11–49 56.6 9.7 3.24 (1.09–9.66)
0–10 11.8 15.1 4.23 (1.11–16.18)
Years of Residence    
0–4 14.7 14.3 1.00
5–9 31.2 11.9 0.65 (0.20–2.17)
10+ 54.1 4.5 0.25 (0.08–0.85)
  1. *Adjusted for presence of indicator bacteria. AGII is acute gastrointestinal illness for specific defination, see methods