Delay APACHE II score p-value1
1st level
No delay 11.95±5.66a, b 0.003*
<24 hrs. delay 15.77±7.36 a
≥24 hrs. delay 16.74±6.67b
2nd level
No delay 12.60±6.33 a,b 0.0001*
≤4 hrs. delay 15.85±6.21 a
>4 hrs. delay 19.10±7.25 b
3rd level delay
No delay 14.86±7.00 0.68
<6hrs delay 14.00±5.47