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Table 6 Associations between microbiological contamination and study period (season) after multivariate logistic regression analysis

From: The social ecology of water in a Mumbai slum: failures in water quality, quantity, and reliability

  Coliforms E. coli
  Odds ratio 95% Confidence interval p-value Odds ratio 95% Confidence interval p-value
Study period    0.002    0.086
 Winter 1.0 - - 1.0 - -
 Summer 4.3 1.1 - 16.1 0.032 15.0 1.7 – 133.6 0.015
 Monsoon 10.2 2.5 - 42.4 0.001 6.3 0.7 – 59.0 0.110
 System failure 1.0 0.2 - 4.1 1.000 6.3 0.7 – 59.0 0.110