Table A.9.

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)	−0.0251	−0.0135	−0.0733*	−0.0112	−0.0403	−0.0203
	(0.0474)	(0.0302)	(0.0427)	(0.0170)	(0.0265)	(0.0236)
2010	0.0156	0.0843***	0.0141	0.0895***	0.0237***	0.0744***
	(0.0126)	(0.00881)	(0.0129)	(0.00854)	(0.00722)	(0.0101)
2011	0.111***	0.152***	0.0421*	0.160***	0.0579***	0.140***
	(0.0177)	(0.0107)	(0.0245)	(0.0105)	(0.0109)	(0.0125)
2012	0.148***	0.230***	0.0986***	0.212***	0.143***	0.224***
	(0.0327)	(0.0295)	(0.0367)	(0.0153)	(0.0278)	(0.0168)
2013	0.186***	0.272***	0.146**	0.271***	0.181***	0.244***
	(0.0297)	(0.0310)	(0.0639)	(0.0187)	(0.0287)	(0.0210)
Observations	46,696	21,874	20,062	5836	224,469	86,585
Number of providers	325	242	238	153	414	274
Number of markets	108	104	109	74	117	113
Adjusted R2	0.259	0.211	0.184	0.283	0.255	0.177
Mean price	4409	7894	1882	6559	1067	2772

This table presents the results from Eq. (1) and estimates provider price responses to the CalPERS reference pricing program, but measures CalPERS exposure relative to the entire insured population (commercially insured, Medicare, and Medicaid). The odd-numbered columns restrict the sample to ASC providers and the even-numbered columns restrict the sample to HOPD providers. The dependent variable inall columns is ln(price_ijtk) and 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.