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Table 2 Interrupted Time Series Regression Results on the Probability of Out-of-network Mental Health Service Use, Quantity of Out-of-network Services, and Total Out-of-network Spending 2007–2012

From: Was federal parity associated with changes in Out-of-network mental health care use and spending?

 

Coefficient

Standard Error

P-Value

Share with any out-of-network mental health service use among mental health service users

 Parity

−0.0305

0.001517

<0.001

 Time

−0.0007

0.0000527

<0.001

 Parity*Time

0.0006

0.0000744

<0.001

Average number of out-of-network mental health outpatient visits among out-of-network mental health service users

 Parity

0.1164

0.0211

<0.001

 Time

0.0017

0.0071

0.019

 Parity*Time

0.0053

0.0010

<0.001

Average total out-of-network mental health spending among out-of-network mental health service users

 Parity

49.1050

13.7305

0.001

 Time

2.8294

0.4263

<0.0001

 Parity*Time

−1.3412

0.6371

0.040

  1. Notes
  2. The unit of observation is the month/year (N = 72). All regressions include 11 dummy variables to control for month/seasonality
  3. P-values reflect 2-sided tests