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Table 3 Correlation between ED occupancy rate and cardiac arrest occurrence

From: Maximum emergency department overcrowding is correlated with occurrence of unexpected cardiac arrest

  Critical zone
ED occupancy rate
Urgent zone
ED occupancy rate
Total
ED occupancy rate
  ρ P ρ P ρ P
IHCA time point
 At ED presentation 0.86 0.01 0.35 0.33 1.0 < 0.01
 At time of cardiac arrest 0.89 < 0.01 0.77 < 0.01 0.96 < 0.01
 Maximum ED occupancy ratea 1.0 < 0.01 0.94 < 0.01 1.0 < 0.01
 Average ED occupancy ratea 0.96 < 0.01 0.44 0.20 1.0 < 0.01
  1. Abbreviations: ED emergency department, IHCA in-hospital cardiac arrest
  2. aMaximum and average ED occupancy rate was measured during ED stay before arrest