Table 3 Multivariable logistic regression analysis of the training set (N = 4321) for Critical Care Trauma Center (CCTC) and Medical-Surgical Intensive Care Unit (MSICU) at London Health Sciences Center (LHSC)
Beta (β) coefficient | Wald chi-square | Odds ratio (95 % CI) | p value | |
|---|---|---|---|---|
Intercept | −5.18 | 137.10 | – | <.0001 |
Age | <.0001 | |||
0–39 (reference) | – | – | – | – |
40–79 | 0.80 | 25.73 | 2.23 (1.64–3.04) | |
≥80 | 1.71 | 90.17 | 5.51 (3.87–7.84) | |
Sex | 0.44 | |||
Male (reference) | – | – | – | – |
Female | 0.06 | 0.60 | 1.07 (0.91–1.25) | |
Nine Equivalents Nursing Manpower Use Score (NEMS) | <.0001 | |||
0–22 (reference) | – | – | – | – |
23–29 | 0.39 | 4.79 | 1.48 (1.04–2.10) | |
≥30 | 1.02 | 36.57 | 2.77 (1.99–3.84) | |
Multiple Organ Dysfunction Score (MODS) | <.0001 | |||
0 (reference) | – | – | – | |
1–4 | 1.18 | 9.87 | 3.25 (1.56–6.78) | |
5–8 | 1.91 | 26.24 | 6.78 (3.26–14.09) | |
9–12 | 2.90 | 57.39 | 18.09 (8.55–38.25) | |
≥13 | 3.56 | 65.11 | 35.16 (14.81–83.46) | |
ICU Admission Source | <.0001 | |||
Operating room/post-anesthesia care unit (reference) | – | – | – | |
Other sourcea | 0.98 | 28.56 | 2.66 (1.86–3.81) | |
Emergency department | 1.00 | 48.76 | 2.71 (2.05–3.59) | |
Hospital—outside or within LHIN | 1.12 | 58.76 | 3.05 (2.26–4.12) | |
Unit/ward | 1.60 | 115.846 | 4.93 (3.69–6.59) | |
ICU admission diagnosis | <.0001 | |||
Cardiovascular/cardiac/vascular (reference) | – | – | – | – |
Other diagnosisb | −0.81 | 37.67 | 0.45 (0.34–0.58) | |
Gastrointestinal | −0.80 | 20.16 | 0.45 (0.32–0.64) | |
Respiratory | −0.56 | 22.85 | 0.57 (0.45–0.72) | |
Trauma | −0.32 | 2.52 | 0.73 (0.49–1.08) | 0.11 |
Neurological | 0.002 | 0.0002 | 1.00 (0.76–1.33) | 0.99 |
Re-admission to ICU (same hospital admission) | −0.30 | 4.02 | 0.74 (0.56–0.99) | 0.04 |
Modified Charlson’s Comorbidity Index (CCI) | 0.1 | |||
0 (reference) | – | – | – | – |
1–3 | −0.21 | 4.20 | 0.81 (0.66–0.99) | |
>3 | 0.05 | 0.10 | 1.06 (0.76–1.48) |