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. Author manuscript; available in PMC: 2014 Sep 19.
Published in final edited form as: Am J Psychiatry. 2013 Feb 1;170(2):180–187. doi: 10.1176/appi.ajp.2012.12030392

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.