Table 4.

Difference-in-difference results for annual MH/SUD service utilization outcomes for enrollees diagnosed with bipolar disorder, major depression and adjustment disorder post-parity implementation (2002), compared to pre-parity (2000).

	2002
	% Change	95% CI
Bipolar Disorder^
Psychotherapy Visits	−10.0	(−20.0, −1.7)
Medication Management Visits	3.8	(−7.2, 14)
MH/SUD Prescriptions	−1.7	(−6.1, 2.9)
Inpatient Days	17.0	(−18.0, 50.0)
Major Depression ^
Psychotherapy Visits	−4.6	(−8.8, −0.7)
Medication Management Visits	−1.4	(−6.5, 3.7)
MH/SUD Prescriptions	−0.7	(−3.3, 2.0)
Inpatient Days	18.0	(−21.0, 51.0)
Adjustment Disorder ^
Psychotherapy Visits	−12.0	(−17.0, −6.1)
Medication Management Visits	12.0	(−17.0, 39.0)
MH/SUD Prescriptions	2.7	(−4.2, 9.6)
Inpatient Days	53.0	(−100.0, 183.0)

Notes: Individuals were identified for each diagnostic group based on ICD-9 diagnosis codes in 1999 claims data. The difference-in-difference results reflect changes pre- (2000) versus post (2002) for individuals in the FEHB Program group relative to individuals in the comparison group. CI refers to confidence interval. Entries appear in bold text if p≤0.007 (Bonferroni adjusted p. values for multiple comparisons equivalent to p.<.05).

^{^}Adjusted changes are not conditional upon use but averaged among all enrollees in a diagnostic cohort.