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Table 1 Incidences of outpatient and EICC services for gastroenteritis and skin and eyes diseases associated with water outage and rate ratios to normal period in 2004-2006 in Taiwan

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

   Normal period a Outage period 10-day lag period
  Person-days 77563341 21479559 127184866
Gastroenteritis     
Outpatient N 44590 13732 77399
  Rate b 57.5 63.9 60.9
  Ratio 1.0 1.11(1.09-1.13)*** 1.06 (1.05-1.07)***
EICCc N 2021 546 3404
  Rate b 2.61 2.54 2.68
  Ratio 1.0 0.98 (0.89-1.07) 1.03 (0.97-1.09)
Skin diseases     
Outpatient N 39113 12580 68181
  Rate b 50.4 58.6 53.6
  Ratio 1.0 1.16(1.14-1.18)*** 1.06 (1.05-1.08)***
EICCc N 394 120 628
  Rate b 0.51 0.56 0.49
  Ratio 1.0 1.10 (0.90-1.35) 0.97 (0.86-1.10)
Eye diseases     
Outpatient N 9163 2980 17102
  Rate b 11.8 13.9 13.4
  Ratio 1.0 1.17(1.13-1.22)*** 1.14 (1.11-1.17)***
EICCc N 27 7 52
  Rate b 0.03 0.03 0.04
  Ratio 1.0 0.94 (0.41-2.15) 1.17 (0.74-1.87)
  1. aWater outages because of typhoons and floods were excluded.
  2. b1/100,000 person-days by period
  3. cEmergency room visits and inpatient visits combined