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. 2003 Apr;38(2):515–533. doi: 10.1111/1475-6773.00131

Table 3.

The Effect of the New Jersey Health Care Reform Act on Cardiac Catheterization Rates

Insured Patients Uninsured Patients


Risk Adjustment Risk Adjustment


No Yes No Yes
Constant 0.2167*** 0.8524*** 0.1980*** 0.4046***
New Jersey 0.0560*** 0.0593*** 0.0916*** 0.0842***
1991 0.0495*** 0.0461*** 0.0766*** 0.0729***
1992 0.0980*** 0.0933*** 0.1364*** 0.1271***
1993 0.1325*** 0.1279*** 0.1548*** 0.1478***
1994 0.1721*** 0.1638*** 0.2334*** 0.2206***
1995 0.2256*** 0.2121*** 0.3379*** 0.3193***
1996 0.2564*** 0.2444*** 0.3502*** 0.3397***
Interaction—NJ and 1993 −0.0145* −0.0185** −0.0088 0.0022
Interaction—NJ and 1994 −0.0106 −0.0164** −0.0948*** −0.0979***
Interaction—NJ and 1995 −0.0512*** −0.0483*** −0.1729*** −0.1731***
Interaction—NJ and 1996 −0.0538*** −0.0522*** −0.1289*** −0.1374***
Number of observations 273,877 273,877 12,762 12,762
F value 742.1 1285.5 52.3 36.8
Adjusted R2 0.03 0.12 .04 .08
Test of controls (p-value) 2.5 (0.8) 1.8 (.17) 1.9 (.14) 1.9 (.16)

Asterisks indicate the level of significance:

*

<.05,

**

<.01,

***

<.001.