Pre-imputation				Post-imputation for missing data
Risk factor	AOR	95%CI		p-value	AOR	95%CI		p-value
Acute non-stroke neurological event	0.99	0.47	2.07	0.981	0.99	0.55	1.78	0.979
Baseline depression in neurological status	0.64	0.24	1.69	0.365	0.68	0.31	1.52	0.348
Congestive heart failure during admission	0.58	0.29	1.19	0.137	0.66	0.36	1.18	0.162
Hepatic insufficiency	1.19	0.32	4.48	0.792	0.99	0.32	3.09	0.992
Hypotension/hypoperfusion	0.34	0.22	0.54	<0.001	0.40	0.27	0.60	<0.001
Metastatic or hematological malignancy	0.83	0.43	1.60	0.569	0.70	0.44	1.13	0.15
Metabolic and electrolyte abnormality	0.56	0.29	1.10	0.095	0.60	0.31	1.16	0.132
Renal insufficiency	0.58	0.35	0.97	0.039	0.52	0.34	0.81	0.004
Respiratory failure	0.72	0.48	1.08	0.111	0.81	0.57	1.15	0.242
Septicemia	0.83	0.32	2.13	0.692	0.65	0.29	1.48	0.308
Active or evolving myocardial infarction	1.21	0.56	2.61	0.636	0.97	0.48	1.98	0.944
Inadequate natural airway	2.15	0.28	16.52	0.461	1.57	0.44	5.66	0.49
Arrhythmia	1.07	0.66	1.76	0.775	1.04	0.70	1.55	0.84
Day hours	1.55	0.83	2.90	0.169	1.48	0.95	2.32	0.084
Event location
Operating room	2.32	0.82	6.56	0.112	1.75	0.81	3.79	0.158
PACU	2.51	0.85	7.41	0.096	2.05	0.95	4.39	0.066
Telemetry	5.44	0.65	45.79	0.119	5.72	1.10	29.66	0.038
ICU	3.51	1.12	10.95	0.031	1.95	1.06	5.07	0.049
Weekend	0.73	0.38	1.40	0.345	0.63	0.38	1.04	0.071
Invasive ventilation in place pre-arrest	0.64	0.24	1.68	0.362	0.69	0.36	1.32	0.267
White vs. non-white	1.32	0.74	2.36	0.346	1.05	0.64	1.70	0.854
Illness Category
Medical cardiac	7.34	2.06	26.13	0.002	3.64	1.52	8.72	0.004
Surgical cardiac	2.30	0.90	5.88	0.083	2.42	1.18	4.95	0.015
Surgical non cardiac	1.66	0.76	3.64	0.204	1.80	1.01	3.20	0.045
Trauma	0.12	0.03	0.48	0.002	0.22	0.07	0.71	0.012
Age at hospital admission	0.97	0.96	0.99	0.001	0.98	0.97	0.99	0.001
Duration of event	0.96	0.94	0.97	<0.001	0.96	0.95	0.97	<0.001

AOR adjusted odds ratio, CI confidence intervals, ICU Intensive Care Unit areas, PACU Post Anesthesia Care Unit.