Table 2.

Aggregate Differences in Colonoscopy, Preventive Colonoscopy, and Mammography Utilization for Intervention as Compared to Control

	Colonoscopy		Preventive Colonoscopy		Mammography
	Coefficient (SE)	P	Coefficient (SE)	P	Coefficient (SE)	P
Month	–0.015 (0.03)	.58	–0.007 (0.02)	.73	–0.033 (0.10)	.73
Post Policy	0.31 (0.76)	.68	0.16 (0.57)	.78	1.24 (2.7)	.65
Month Post Policy	0.054 (0.12)	.66	0.091 (0.09)	.32	0.093 (0.43)	.83

Outcome is the monthly difference in utilization rates between Intervention and Control. Post Policy coefficient refers to the level change (absolute difference) in utilization between the study groups in the month immediately after the policy.

Month Post Policy coefficient describes any slope change in utilization after the policy. Includes 63,246 members (30,802 for mammography) aged 50-64 years with continuous coverage for 2 years before time zero and 9 months after time zero.