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Table 2 Primary outcome (ED LOS) and other outcomes related to time

From: Impact of the 24-hour time target policy for emergency departments in South Korea: a mixed method study in a single medical center

 

Before policy implementation

After policy implementation

P-value

(N = 81,922)

(N = 99,798)

ED LOS, hours

3.9 [2.1;7.6]

4.5 [2.5;8.5]

<.001

Time to first prescription, hours

0.4 [0.2; 0.6]

0.3 [0.2; 0.6]

<.001

Time to admission decision, hoursa

4.3 [2.4; 7.8]

5.0 [2.7; 8.6]

<.001

Time to admission, hoursa

2.1 [0.6; 7.8]

3.4 [1.2; 10.7]

<.001

Time to CT, hoursa

1.7 [0.7; 3.1]

1.9 [0.7; 3.4]

<.001

Time to MRI, hoursa

4.0 [2.6; 5.9]

3.9 [2.4; 5.9]

.001

Time to CAG, hoursa

1.6 [0.9; 2.6]

2.4 [1.4; 3.9]

<.001

Time to operation, hoursa

0.9 [0.3; 2.3]

0.8 [0.3; 2.3]

.755

  1. All data are presented as medians with interquartile ranges. Comparison of ED LOS and other outcomes related to time before and after policy implementation used the Mann–Whitney U test for continuous variables that were not normally distributed. Statistical significance was set at p < .05
  2. ED LOS Emergency department length of stay, CT Computed tomography, MRI Magnetic resonance imaging, CAG Coronary angiography
  3. aThe number of patients may differ from total number. Only those patients who underwent these tests and treatments were included in analysis