. Author manuscript; available in PMC: 2017 Oct 10.

Published in final edited form as: J Ambul Care Manage. 2017 Jul-Sep;40(3):228–237. doi: 10.1097/JAC.0000000000000162

Table 1.

Utilization and Cost Analysis per 1000 Member Months and DID Estimate

	Preperiod		Postperiod		D-I-D Estimate (SE)

	Pilot	Comparison	Pilot	Comparison
Primary care visits	359.48	350.55	361.44	357.39	− 0.0334 (0.037)
Specialist visits	150.98	149.73	175.72	172.36	0.0463 (0.032)
ACS emergency department visits	1.90	1.69	1.94	1.65	0.0007 (0.0006)
Emergency department visits	33.37	31.65	34.18	32.53	0.005 (0.0053)
ACS inpatient admissions	0.25	0.21	0.31	0.30	0.0001 (0.0002)
Inpatient admissions	5.42	5.07	6.38	6.08	0.0011 (0.0012)
Total costs	173 016.87	166 374.24	202 556.17	182 325.45	80.42^a (31.80)

Abbreviation: ACS, ambulatory care sensitive; D-I-D, difference-in-difference; SE, standard errors.

P < . 05.