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Table 1 Baseline characteristics comparison between survivors and non-survivors of Critical Care Trauma Center (CCTC) and Medical-Surgical Intensive Care Unit (MSICU) at London Health Sciences Center (LHSC), between 1 Jan 2009 and 30 Nov 2012, N = 8822

From: To develop a regional ICU mortality prediction model during the first 24 h of ICU admission utilizing MODS and NEMS with six other independent variables from the Critical Care Information System (CCIS) Ontario, Canada

Baseline characteristics Survivors, N (%) Non-survivors, N (%) p value
Total number of subjects 6813 (77.23) 2009 (22.77)  
Sex    0.24
 Male 3867 (56.76) 1170 (58.24)  
 Female 2946 (43.24) 839 (41.76)  
Age, mean ± SD 59.13 ± 17.49 66.82 ± 15.67 <0.0001
 Male ± SD 58.94 ± 17.29 66.40 ± 15.55  
 Female ± SD 59.38 ± 17.76 67.40 ± 15.81  
 0–39 1067 (15.66) 124 (6.17)  
 40–79 4972 (72.98) 1452 (72.27)  
 ≥ 80 774 (11.36) 433 (21.55)  
Intensive care units    0.06
 Critical Care Trauma Center (CCTC) 3542 (51.99) 1092 (54.36)  
 Medical Surgical Intensive Care Unit (MSICU) 3271 (48.01) 917 (45.64)  
ICU admission source    <0.0001
 Operating room/post-anesthesia care unit 1748 (25.66) 191 (9.51)  
 Hospital—outside or within LHIN 1175 (17.25) 389 (19.36)  
 Emergency department 1983 (29.11) 624 (31.06)  
 Other sourcea 625 (9.18) 195 (9.71)  
 Unit/ward 1280 (18.79) 610 (30.36)  
ICU admission diagnosis    <0.0001
 Cardiovascular/cardiac/vascular 895 (13.14) 463 (23.05)  
 Other diagnosisb 1727 (25.35) 353 (17.57)  
 Gastrointestinal 826 (83.94) 158 (7.86)  
 Respiratory 2091 (30.69) 655 (32.60)  
 Trauma 473 (6.94) 106 (5.28)  
 Neurological 801 (11.76) 274 (13.64)  
Multiple Organ Dysfunction Score (MODS)    <0.0001
Mean MODS ± SD 4.65 ± 2.96 7.01 ± 3.23  
Minimum-maximum MODS 0–19 0–20  
 0 495 (7.27) 25 (1.24)  
 1–4 3035 (44.55) 450 (22.40)  
 5–8 2605 (38.24) 930 (46.29)  
 9–12 591 (8.67) 492 (24.49)  
  > 13 87 (1.28) 112 (5.57)  
Nine Equivalents Nursing Manpower Use Score (NEMS)    <0.0001
Mean NEMS ± SD 30.50 ± 8.45 36.64 ± 8.68  
Minimum-maximum NEMS 0–56 0–56  
 0–22 990 (14.56) 94 (4.68)  
 23–29 2458 (36.14) 388 (19.31)  
 ≥30 3353 (49.30) 1527 (76.01)  
Modified Charlson’s Comorbidity Index(CCI)    0.74
Mean CCI ± SD 1.30 ± 0.57 1.34 ± 0.61  
 Score 0 5148 (75.56) 1461 (72.72)  
 Score 1–3 1280 (18.79) 405 (20.16)  
 Score >3 385 (5.65) 143 (7.12)  
Re-admission to ICU (same hospital admission) 626 (9.19) 181 (9.01) 0.81
  1. a Other Source includes patients admitted from the following locations: home—within or outside LHIN, level 2 unit or step-down unit, level 3 unit (medical/surgical or specialty unit), complex continuing care facility, rehabilitation facility, outside province, other
  2. bOther diagnosis includes patients with the following diseases: metabolic/endocrine, genitourinary, musculoskeletal, skin, oncology, hematology, other