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Table 1 Incidence rates and 95% confidence intervals (CIs) of heat stroke emergency department visits by patient characteristics, National Emergency Department Sample, United States, 2009 and 2010

From: Emergency Department Visits for Heat Stroke in the United States, 2009 and 2010

Patient characteristics Number of patients with heat stroke (weighted) Incidence per 100000 population 95% CI
Total population 8251 1.34 1.23-1.45
Age(yr)    
         0-19 801 0.48 0.40-0.56
         20-29 987 1.15 0.93-1.37
         30-39 927 1.15 0.97-1.34
         40-49 1281 1.47 1.26-1.67
         50-59 1342 1.62 1.35-1.89
         60-69 1118 1.97 1.61-2.32
         70-79 785 2.38 1.98-2.79
         80+ 1010 4.45 3.73-5.18
Sex    
         Male 6022 1.99 1.81-2.16
         Female 2219 0.71 0.63-0.79
Region of hospital    
         Northeast 890 0.80 0.65-0.96
         Midwest 1555 1.16 0.97-1.35
         South 3675 1.61 1.43-1.79
         West 2132 1.49 1.19-1.78
Patient location    
         Metropolitan 6303 1.19 1.08-1.30
         Micropolitan 953 1.55 1.24-1.87
Year of visita    
         2009 3294 1.07 0.94-1.21
         2010 4957 1.61 1.43-1.78
  1. Note. Year of visit was defined as discharge year. There were 5 missing values for sex.