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Table 3 ED presentations by non-hot, single hot and heatwave days, December to February 2000 to 2012

From: The impact of heatwaves on emergency department visits in Brisbane, Australia: a time series study

  HWD1 HWD2  
  Non-hot Single hot Heatwave Non-hot Single hot Heatwave Total
Number of days 1,034 19 30 1,076 2 5 1,083
Presentations 479 34 115 556 9 63 628
Average/day 0.46 1.79 3.83 0.52 4.50 12.60 0.58
(95% CI) (0.41, 0.52) (0.95, 2.63) (1.47, 6.20) (0.48, 0.56) (3.52, 5.48) (1.06, 24.14) (0.49, 0.67)
RR* (95% CI) 4.98 (3.88, 6.38) 18.53 (12.05, 28.49)  
  1. *Relative risk, heatwave days versus non-heatwave days (non-hot + single hot), controlled for relative humidity, particulate matter with <10 micrometers in aerodynamic diameter, ozone, nitrogen dioxide, day of week and long-term trends.