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Table 2 Adjusted Measures of Association

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

Exposure No AGII AGII Odds Ratio (95% CI)*
E. coli    
0 cfu/100 ml 523 46  
1+ cfu/100 ml 45 5 1.52 (0.33–6.92)
Total Coliform    
< 6 cfu/100 ml 483 48  
6+ cfu/100 ml 85 3 0.39 (0.10–1.50)
Total Coliform    
0 cfu/100 ml 366 32  
1+ cfu/100 ml 202 19 1.07 (0.42–2.69)
  1. *Adjusted for age and number of years at current residence. AGII is acute gastrointestinal illness for specific defination, see methods