Table A.6.

Provider price responses to reference pricing: full insured population denominator.

	Arthroscopy		Cataract		Colonoscopy
	(1)	(2)	(3)	(4)	(5)	(6)
	ASC	HOPD	ASC	HOPD	ASC	HOPD
Post × ln(CalPERS exposure)	−0.0182	−0.0101	−0.0677*	−0.0104	−0.0444*	−0.0197
	(0.0355)	(0.0260)	(0.0374)	(0.0144)	(0.0244)	(0.0204)
2010	0.0163	0.0895***	0.00784	0.0934***	0.0235***	0.0737***
	(0.0123)	(0.00921)	(0.0122)	(0.00924)	(0.00741)	(0.00954)
2011	0.111***	0.156***	0.0367*	0.160***	0.0604***	0.139***
	(0.0177)	(0.0119)	(0.0212)	(0.00994)	(0.0110)	(0.0121)
2012	0.147***	0.239***	0.104**	0.218***	0.155***	0.228***
	(0.0341)	(0.0340)	(0.0398)	(0.0171)	(0.0315)	(0.0187)
2013	0.186***	0.277***	0.156**	0.274***	0.194***	0.247***
	(0.0317)	(0.0350)	(0.0676)	(0.0208)	(0.0323)	(0.0230)
Observations	41,818	19,508	17,145	5019	197,988	75,896
Number of providers	321	244	238	153	411	273
Number of markets	107	108	110	78	117	113
Adjusted R2	0.252	0.209	0.192	0.282	0.252	0.177

This table presents the results from Eq. (1) but restricts the population to the non-CalPERS Anthem PPO control population. The odd-numbered columns restrict the sample to ASC providers and the even-numbered columns restrict the sample to HOPD providers. The dependent variable in all columns is the log of each procedure’s professional fee. Each regression is estimated using OLS. Controls for month, patient age, gender, Charlson comorbidity score, indicators for 17 chronic conditions, and patient HRR fixed effects are included but not reported. Robust standard errors clustered at the Hospital Service Area level are in parentheses.

^***p < 0.01.

^**p < 0.05.

^*p < 0.1.