Effects of the Vermont Mental Health and Substance Abuse Parity Law

Table C.7: Determinants of the Level of Substance Abuse Service Use: Kaiser/CHP, 1996-1999

  Log of Number of Outpatient Substance Abuse Visits per User Log of Number of Inpatient/Partial Substance Abuse Days per Usera
Intercept 1.075***
(0.066)		 2.225***
(0.180)
Age (40 and over omitted)    
   18 and under -0.296***
(0.059) 		0.216
(0.174)
   19 to 29 -0.155***
(0.058) 		-0.056
(0.227)
   30 to 39 0.014
(0.043) 		-0.137
(0.136)
Gender (Female omitted) 0.014
(0.038) 		-0.200*
(0.120)
Subscriber Status (Dependent omitted) 0.007
(0.045) 		-0.276**
(0.130)
County (Chittenden omitted)    
   Addison 0.127
(0.095) 		-0.413
(0.326)
   Bennington 0.066
(0.052) 		0.337
(0.237)
   Caledonia/Essex/Orleans -0.014
(0.197) 		1.398*
(0.840)
   Franklin/Grand Isle 0.001
(0.060) 		0.029
(0.211)
   Lamoille 0.237**
(0.105) 		0.269
(0.381)
   Orange 0.084
(0.170) 		-0.005
(0.594)
   Rutland 0.063
(0.059) 		0.680***
(0.197)
   Washington -0.207**
(0.098) 		-0.537
(0.336)
   Windham/Windsor 0.042
(0.058) 		0.276**
(0.140)
Dual Diagnosis (MH/SA) -1.101***
(0.071)		 -0.327
(0.348)
Quarter 0.013*
(0.008) 		-0.046*
(0.026)
Parity (1 = yes) -0.032
(0.067) 		0.032
(0.227)
R-Square 0.116 0.193
F 19.42*** 3.17***
N 2,545 242
Dependent Variable Mean 0.140 1.784
Sources: Original analysis of Kaiser/CHP claims/encounter data by Mathematica Policy Research, Inc.
   
a The dependent variable reflects an inpatient-day equivalence, where two "partial" days of treatment are counted as one day of inpatient treatment
   
* Significantly different from zero at the .10 level, two-tailed test.
** Significantly different from zero at the .05 level, two-tailed test.
*** Significantly different from zero at the .01 level, two-tailed test.
   
MH/SA = mental health/substance abuse.

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