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Table 3 Covariates associated relative risks of gastroenteritis, skin infections, and eye diseases during water outage compared with those during normal period in Taiwan, 2004-2006

From: Water outage increases the risk of gastroenteritis and eyes and skin diseases

   Outage period (vs. normal period) 10-day lag period (vs. normal period )
   RR (95% CI) RR (95% CI)
Gastroenteritis    
Temperature (°C) < 15 1.19(1.05-1.34)* 1.15(1.08-1.23)***
  15-19 1.19(1.10-1.28)*** 1.10(1.05-1.16)***
  20-24 1.20(1.12-1.28)*** 1.24(1.19-1.29)***
  25-29 1.69(1.56-1.83)*** 1.61(1.53-1.71)***
  30+ 12.1(6.17-23.7)*** 11.3(6.10-20.8)***
  p for trend 0.16 0.16
Humidity (%) < 67 1.31(1.24-1.37)*** 1.28(1.24-1.32)***
  67-83 1.36(1.23-1.51)*** 1.21(1.13-1.29)***
  84+ 1.25(1.11-1.41)** 1.29(1.21-1.38)***
  p for trend 0.63 0.93
Age (years) < 15 1.30(1.21-1.40)*** 1.23(1.17-1.28)***
  15-64 1.32(1.24-1.41)*** 1.28(1.23-1.33)***
  65+ 1.29(1.18-1.40)*** 1.26(1.20-1.33)***
  p for trend 0.79 0.59
Education Index 0.82-0.84 1.38(1.29-1.49)*** 1.39(1.33-1.46)***
  0.85+ 1.30(1.23-1.36)*** 1.23(1.19-1.26)***
  P value 0.97 0.91
Skin infections    
Temperature(°C) < 15 1.14(0.99-1.30) 1.10(1.02-1.18)*
  15-19 1.26(1.16-1.37)*** 1.23(1.17-1.30)***
  20-24 1.26(1.17-1.35)*** 1.26(1.20-1.31)***
  25-29 1.63(1.50-1.77)*** 1.52(1.44-1.61)***
  30+ 4.48(2.29-8.78)*** 5.19(2.94-9.17)***
  p for trend 0.12 0.13
Humidity (%) < 67 1.38(1.31-1.45)*** 1.33(1.29-1.38)***
  67-83 1.31(1.18-1.46)*** 1.15(1.07-1.24)***
  84+ 1.30(1.14-1.49)*** 1.38(1.28-1.49)***
  p for trend 0.26 0.87
Age (years) < 15 1.43(1.30-1.58)*** 1.27(1.19-1.35)***
  15-64 1.35(1.26-1.44)*** 1.30(1.25-1.35)***
  65+ 1.36(1.24-1.48)*** 1.30(1.23-1.38)***
  p for trend 0.41 0.33
Education Index 0.82-0.84 1.42(1.31-1.54)*** 1.44(1.36-1.52)***
  0.85+ 1.35(1.28-1.42)*** 1.26(1.23-1.31)***
  p value 0.96 0.90
Eye infections    
Temperature(°C) < 15 1.05(0.81-1.36) 1.14(1.004-1.30)*
  15-19 1.28(1.10-1.48)* 1.27(1.15-1.39)***
  20-24 1.10(0.98-1.24) 1.24(1.16-1.32)***
  25-29 1.73(1.54-1.94)*** 1.65(1.52-1.79)***
  30+ 40.3(7.23-224)*** 18.0(3.56-90.7)**
  p for trend 0.17 0.17
Humidity (%) < 67 1.33(1.22-1.44)*** 1.39(1.32-1.46)***
  67-83 1.27(1.07-1.50)* 1.20(1.08-1.34)**
  84+ 1.50(1.20-1.86)** 1.35(1.18-1.54)***
  p for trend 0.50 0.87
Age (years) < 15 1.34(1.17-1.53)*** 1.38(1.27-1.50)***
  15-64 1.36(1.24-1.49)*** 1.32(1.24-1.39)***
  65+ 1.27(1.07-1.51)* 1.48(1.33-1.64)***
  p for trend 0.47 0.58
Education Index 0.82-0.84 1.41(1.23-1.61)*** 1.53(1.39-1.67)***
  0.85+ 1.31(1.21-1.42)*** 1.28(1.22-1.34)***
  p for trend 0.95 0.86
  1. * p < 0.05; ** p < 0.001; *** p < 0.0001
  2. ※Model included water outage period, daily average temperature, daily relative humidity, year, month, holiday, area, sex, age, GDP index, and education index were included in the model.