Total Cost First Post-Treatment Year

Duration of Drug Therapy

Model

Model Specification

OLS

(SE)

R-squared

In OLS

OLS

(SE)

R-squared

In OLS

1

Demographic variables only

1350^***

(63.7)

0.095

95.9^***

(0.8)

0.037

2

Add: Medical

Diagnostic Mix

1399^***

(62.0)

0.160

93.0^***

(0.8)

0.046

3

Add: Mental Health

Diagnostic Mix

1230^***

(61.6)

0.182

90.2^***

(0.8)

0.060

4

Add: Prior Use of Hospital and Nursing Home Care

398^***

(44.6)

0.571

89.1^***

(0.8)

0.063

5

Add: Pre-Treatment Costs and Duration of Therapy

615^***

(36.7)

0.710

76.4^***

(0.8)

0.130

6

Add: Episode Type

751^***

(37.8)

0.712

55.0^***

(0.8)

0.157

Estimated Impact of Episode Type on Total Cost and Duration of Drug Therapy in Model 6

Estimated Impact of Episode Type on Total Cost and Duration of Drug Therapy in Model 6 (Restart as baseline)

Switching

1221^***

(65.3)

136.9^***

(1.4)

Delayed switching

1360^***

(55.3)

73.8^***

(1.2)

Augmentation

2237^***

(58.3)

−75.9^***

(1.2)