Table 2.

Adjusted Relationships between Competition Level^* and Costs per Discharge, to Test for Cost Convergence between FPS and Public Hospitals under High Competition—Case Payment Diagnoses

	Costs per Discharge
	CS		VD		Prostatectomy		Thyroidectomy
Variable	HC	LC	HC	LC	HC	LC	HC	LC
Hospital ownership
Public (no=0)	1,443c	1,878c	409c	−1,469a	1,023	162	2,479c	15,313a
NFP (no=0)	806c		111b	−2,614c	1,243a	217	776	7,759
FP
Hospital level
Medical center (no=0)	2,366c	4,149c	1,477c	2,598c	716	5,325c	4,922c	11,519c
Regional hospital (no=0)	1,641c	494a	779c	1,617a	1,377c	−5,894c	4,002c	−256
District hospital
Clinic (no=0)	−2,292c	−4,679c	−534c	−4,131c
Percent crossover patients	3,244c	−2,663c	781c	−6,070c	8,012c	16,880c	3,612b	7,358c
Clinic beds	0.82c	2.2c	0.75c	0.88c
Patient's gender
Male (no=0)							589	1,792
Female
Patient's age	12c	−3	12c	19c	111c	87	8	7
Number of comorbidities
0
1 (no=0)	482c	−632c	122c	−1,298c	1,698c	3,992c	3,449c	5,469c
2 (no=0)	1,260c	325	665c	−584c	3,683c	7,749c	5,619c	6,342b
3+ (no=0)	4,066c	1,301c	2,104c	792c	10,676c	16,635c	9,193c	7,033
Constant	27,732	15,412	10,931	14,345	28,035	33,917	25,595	20,061
N	57,315	5,554	94,328	10,787	8,015	1,031	6,093	380
R-square	0.164	0.380	0.155	0.310	0.077	0.232	0.114	0.423

^ap<0.05;

^bp<0.01;

^cp<0.001;

^*HC=highest competition quartile (lowest HHI quartile); LC=lowest competition quartile (highest HHI quartile).