Table 1.

Characteristics of study population.

	Pre-implementation (N = 220)		Post-implementationa (N = 218)		p-valueb
Characteristic	N	%	N	%
Gender					0.63
Female	116	53	120	55
Age (median years, IQR)	52	41–57	52	44–58	0.58
Race/ethnicity					0.18
Hispanic	92	42	96	44
Black, non-Hispanic	81	37	80	37
White, non-Hispanic	31	14	18	8
Asian, non-Hispanic	2	1	6	3
Other	9	4	15	7
Unknown/missing	5	2	3	1
Language					0.58
English	184	84	186	85
Spanish	33	15	27	12
Other	3	1	5	3
Insurance					0.91
Publicc	153	70	149	68
Private	60	27	63	29
Uninsured	7	3	6	3
Admission service					0.23
Medicine	168	76	165	76
Surgery	36	16	43	20
Neurology	8	4	2	1
Psychiatry	5	2	7	3
Gynecology	3	1	1	0
Inpatient length of stay (median days, IQR)	2	0–6	2	0–5	0.88

^aThe pre-implementation and post-implementation periods include the two 8-week periods preceding and following the implementation of the electronic medical record-based intervention with a 14-day blackout period around the date of implementation.

^bp-values estimated using Wilcoxon rank-sum tests for non-normally distributed continuous variables and Chi-squared tests for categorical variables.

^cPublic insurance includes Medicare or Medicaid.

Note: IQR, interquartile range.