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Table 1 Baseline Characteristics of patients stratified into three groups based on boarding time

From: The association of duration of boarding in the emergency room and the outcome of patients admitted to the intensive care unit

Variables Group I (<6 h) N = 227 Group II (6–24 h) N = 358 Group III (>24 h) N = 355 P- value
Age - yr. (mean ± SD) 48.7 ± 22.2 50.6 ± 22.6 58.2 ± 20.9 0.04
Gender - no. (%)
 Female 37 (20.4) 48 (16.9) 76 (26.4) 0.02
 Male 144 (79.5) 235 (83.0) 212 (73.6)
APACHE score - (mean ± SD) 19.4 ± 9.7 20.1 ± 9.8 21.8 ± 8.2 0.38
Mechanical ventilation, no. (%) 141 (62.1) 269 (75.1) 257 (72.4) 0.003
GCS - (mean ± SD) 11 ± 4.2 11 ± 4.2 10.7 ± 4.2 0.87
PaO2/FiO2 - (mean ± SD) 260 ± 138.9 223.8 ± 122.6 207.3 ± 90.9 0.38
Admission category, no. (%)
 Non-operative 220 (96.9) 353 (98.6) 347 (97.8) 0.38
 Post-operative 7 (3.1) 5 (1.4) 8 (2.3)
Admission Diagnosis Category, no. (%)
 Respiratory 40 (17.6) 94 (26.3) 122 (34.4) <0.0001
 Cardiovascular 63 (27.8) 96 (26.9) 129 (36.3)
 Neurological 49 (21.6) 53 (14.9) 32 (9.0)
 Other medical 15 (6.6) 30 (8.4) 23 (6.5)
 Non-operative trauma 53 (23.4) 79 (22.1) 41 (11.6)
 Post-operative 7 (3.1) 5 (1.4) 8 (2.3)
Chronic comorbities, no. (%)
 Chronic respiratory 19 (8.4) 38 (10.6) 71 (20.0) <0.0001
 Chronic cardiac 30 (13.2) 61 (17.0) 71 (20.0) 0.11
 Chronic renal 20 (8.8) 34 (9.5) 41 (11.6) 0.50
 Chronic liver 11 (4.9) 19 (5.3) 28 (7.9) 0.23
 Chronic Immunosuppression 14 (6.2) 21(5.9) 31 (8.7) 0.28
Lab findings
 Creatinine - (mean ± SD) (μmol/L) 153.3 ± 197.1 161.6 ± 185.5 174.1 ± 152.5 0.11
 Platelets - (mean ± SD) (109/L) 211 ± 108.5 202.8 ± 112.5 20.7 ± 137.3 0.132
 INR 1.5 ± 0.8 1.94 ± 1.50 1.5 ± 0.9 0.004
  1. APACHE II Acute Physiology and Chronic Health Evaluation II, GCS Glasgow coma scale, PaO2/FIO2 ratio the ratio of partial pressure of oxygen to the fraction of inspired oxygen, INR international normalized ratio, SD Standard deviation