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Table 3 Comparison of PE ED visits during first and second half of study period

From: National trends in emergency room diagnosis of pulmonary embolism, 2001–2010: a cross-sectional study

   ED visits for PE  
   2001-2005 2006-2010  
Characteristic   No. of obs. Weighted % (95% CI) No. of obs. Weighted % (95% CI) P-value
Age Under 65 years 75 62.3% (5.6%) 87 52.1% (4.5%) 0.17
  65 years and over 48 37.7% (5.6%) 73 48.0% (4.5%)  
Sex Male 53 43.9% (5.6%) 70 46.0% (5.1%) 0.78
  Female 70 56.1% (5.6%) 90 54.0% (5.1%)  
Race White 100 80.1% (5.8%) 123 80.1% (4.0%) 0.87
  Black 21 18.8% ** 34 19.3% (4.0%)  
  Other 2 1.1% ** 3 0.6% **  
Hemodynamics Stable 84 75.2% (4.7%) 119 75.1% (4.6%) 0.99
  Unstable 30 24.8% (4.7%) 41 24.9% (4.6%)  
CT or MRI Yes 46 37.9% (5.7%) 108 69.2% (4.7%) <0.0001
  No 77 62.1% (5.7%) 52 30.8% (4.7%)  
Disposition Admission/Transfer 96 88.8% (3.0%) 137 90.5% (2.8%) 0.59
  Discharge from ED 23 11.8% ** 20 9.5% **  
  Death on Arrival/in ED 4 1.9% ** 3 4.2% **  
  1. **Indicates insufficient observations to generate reliable confidence intervals.
  2. Comparison of demographic, clinical and hospital data between the first (2001–5) and second (2006–10) half of the study period associated with ED visits for PE.