Effects of the Vermont Mental Health and Substance Abuse Parity Law

Table C.2: Determinants of the Probability of Mental Health Service Use: Blue Cross Blue Shield of Vermont, 1996-1999

  Any Mental Health Services Inpatient/Partial MH Outpatient MH
Coefficient (S.E.) Odds Ratio Coefficient (S.E.) Odds Ratio Coefficient (S.E.) Odds Ratio
Intercept -2.620***
(0.022)		   -8.049***
(0.242) 		  -2.621***
(0.022) 		 
Age (40 and over ommited)            
   18 and under -0.334***
(0.019) 		0.72 -0.109
(0.179) 		0.90 -0.334***
(0.019) 		0.72
   19 to 29 -0.347***
(0.024) 		0.71 0.371*
(0.203) 		1.45 -0.346***
(0.024) 		0.71
   30 to 39 0.182***
(0.016) 		1.20 0.121
(0.178) 		1.13 0.182***
(0.016) 		1.20
Gender (Female omitted) -0.539***
(0.013) 		0.58 -0.393***
(0.134) 		0.68 -0.539***
(0.013) 		0.58
Subscriber Status (Dependent omitted) 0.194***
(0.015) 		1.22 -0.227
(0.153) 		0.80 0.194***
(0.015) 		1.22
County (Chittenden omitted)            
   Addison -0.336***
(0.027) 		0.72 0.215
(0.290) 		1.24 -0.336***
(0.027) 		0.71
   Bennington -0.108***
(0.024) 		0.90 0.149
(0.290) 		1.16 -0.107***
(0.024) 		0.90
   Caledonia/Essex/Orleans -0.931***
(0.025) 		0.39 0.154
(0.237) 		1.17 -0.932***
(0.025) 		0.39
   Franklin/Grand Isle -0.712***
(0.032) 		0.49 0.331
(0.284) 		1.39 -0.712***
(0.032) 		0.49
   Lamoille -0.512***
(0.033) 		0.60 -0.498
(0.437) 		0.61 -0.512***
(0.033) 		0.60
   Orange -0.686***
(0.033) 		0.50 -0.090
(0.342) 		0.91 -0.685***
(0.033) 		0.50
   Rutland -0.470***
(0.025) 		0.63 -0.506
(0.329) 		0.60 -0.469***
(0.025) 		0.63
   Washington -0.418***
(0.021) 		0.66 0.310
(0.224) 		1.36 -0.418***
(0.021) 		0.66
   Windham/Windsor -0.190***
(0.019) 		0.83 0.426**
(0.21) 		1.53 -0.190***
(0.019) 		0.83
Line of Business (VFP omitted)            
   Basic 0.129***
(0.017) 		1.14 0.379**
(0.169) 		1.46 0.129***
(0.017) 		1.14
   Comp 0.249***
(0.014) 		1.28 0.038
(0.157) 		1.04 0.249***
(0.014) 		1.28
Quarter -0.003
(0.002) 		1.00 0.009
(0.022) 		1.01 -0.003
(0.002) 		1.00
Managed Care for MH/SA (1 = yes) -0.296***
(0.02) 		0.74 0.006
(0.200) 		1.01 -0.296***
(0.020) 		0.74
Parity (1 = yes) 0.216***
(0.024) 		1.24

0.296
(0.234)

1.35 0.216***
(0.024) 		1.24
Overall Chi-Square 6,045.13***   49.76***   6,044.57***  
N 656,735   656,735   656,735  
Sources: Original analysis of Blue Cross Blue Shield of Vermont claims/encounter data by Mathematica Policy Research, Inc.
   
* Significantly different from zero at the .10 level, two-tailed test.
** Significantly different from zero at the .10 level, two-tailed test.
*** Significantly different from zero at the .10 level, two-tailed test.
   
S.E. = Standard error.

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