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Table 5 Association between Faecal Water Quality Indicators with Background Counts Less than 150 cfu/100ml and AGII

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

433

40

 

1+ cfu/100 ml

12

4

2.85 (0.97–8.39)

Total Coliform

   

< 6 cfu/100 ml

423

42

 

6+ cfu/100 ml

32

2

0.32 (0.03–4.08)

Total Coliform

   

0 cfu/100 ml

332

29

 

1+ cfu/100 ml

123

15

1.77 (0.94–3.30)

  1. *Adjusted for age and number of years at current residence. AGII is acute gastrointestinal illness for specific defination, see methods