Table 1.

Distribution of patient characteristics across the two study arms. The last row shows the p-value for the Mann-Whitney U test.

		Before	After
Number of encounters		404	410
Number of patients		392	401
Sex = female (%)		225 (56%)	211 (51%)
Age (mean ± SD in years)		64.1 ± 17.2	61.1 ± 16.9
Race (%)	White	260 (64.4%)	261 (63.7%)
	Black	68 (16.8%)	77 (18.8%)
	Hispanic	24 (5.9%)	24 (5.9%)
	Asian	21 (5.2%)	22 (5.4%)
	Other/Unknown	31 (7.7%)	26 (6.2%)
Primary Insurance (%)	Medicare	215 (53.2%)	204 (49.8%)
	Medicaid	42 (10.4%)	36 (8.8%)
	Commercial	135 (33.4%)	157 (38.3%)
	Other	12 (3.0%)	13 (3.1%)