Table 2.

Sample Descriptives

		N	%
Total		3,091	100.0%
Sex
	Female	1,628	52.7%
	Male	1,463	47.3%
Race/Ethnicity
	White, Non-Hispanic	2,094	67.7%
	Hispanic	437	14.1%
	Black, Non-Hispanic	338	10.9%
	Asian	140	4.5%
	Native American / Alaska Native	13	0.4%
	Native Hawaiian / Pacific Islander	4	0.1%
	Other	143	4.6%
Age
	18–39	487	15.8%
	40–64	1,275	41.2%
	≥ 65	1,329	43.0%
Psychiatric diagnoses
	Psychotic disorder1	1,689	54.6%
	Depression2	1,332	43.1%
	Bipolar disorder3	502	16.2%
Comorbid medical conditions
	Hypertension	1,712	55.4%
	Fluid or electrolyte disorder	1,398	45.2%
	Cardiac arrhythmia	1,225	39.6%
	Anemia	1,189	38.5%
	Chronic ischemic heart disease	1,006	32.5%
	Renal failure	813	26.3%
	Chronic pulmonary disease	750	24.3%
	Congestive heart failure	519	16.8%
van Walraven Score5
	≥ 20	1,299	42.0%
	10–19	682	22.1%
	0–10	857	27.7%
Substance use disorder
	Nicotine use	359	11.6%
	Drug abuse	343	11.1%
	Alcohol abuse	254	8.2%
Medications6
	Antidepressant	1,060	67.3%
	Anxiolytic	928	58.9%
	Antipsychotic	745	47.3%
	Mood stabilizer	150	9.5%

¹Corresponding to ICD-9 296.00–296.89, 296.40– 296.89; ICD-10 F31.0–31.9

²Corresponding to ICD-9 296.20–296.36; ICD-10 F32–33.x

³Corresponding to ICD-9 295.xx; ICD-10 F20.x, F25.x.

⁵Summary numeric score derived from Elixhauser comorbidity classification system corresponding to overall disease burden and in-hospital mortality

⁶Information on medications was only available for 1,576 patients. Classification tree analyses used median imputation for missing values.