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Table 5 Risk factors associated to Legionella isolation in multivariate logistic regression analysis

From: Legionella control in the water system of antiquated hospital buildings by shock and continuous hyperchlorination: 5 years experience

Risk factors Parameters OR 95% CI p-value
Water temperature°C ≥20°C - ≤45°C 11.96 1.28 - 111.48 0.0293
  <20°C or > 45°C
Residual free chlorine concentration mg/L < 0.5 12.97 1.37 - 123.17 0.0256
  ≥ 0.5
Potability of water according to regulation Not potable water 3.57 0.77 - 16.65 0.1052
  Potable water
No continuous vs. continuous hyperchlorination No continuous hyperchlorination 10.30 1.06 - 100.05 0.0444
  Continuous hyperchlorination