Table 2 Mean outcome measures (with SD) and effect sizes * (Cohens’ d ) of the step-down and outpatient treatments at baseline and at 8, 18, 3, and 6- years of follow-up

47.3

(4.3)

51.5

(10.2)

53.5

(10.3)

57.7

(12.7)

62.7

(13.6)

1.92

25.3

(7.2)

20.6

(8.6)

19

(9)

19.2

(10.6)

13.7

(11.0)

1.19

1.71

(0.69)

1.43

(0.65)

1.32

(0.75)

1.19

(0.75)

0.91

(0.72)

1.14

18.3

(8.2)

17.2

(7.6)

15.5

(10.7)

14.7

(11.3)

13,0

(11.2)

0.56

1.66

(0.53)

1.53

(0.59)

1.51

(0.6)

1.42

(0.62)

1.13

(0.68)

0.89

3.3

(1.6)

4.5

(1.6)

4.9

(2.1)

5.4

(2)

6.1

(2.3)

1.49

13.3

(5.6)

8.5

(6.4)

5.9

(6.5)

1.24

Outpatient

Baseline

8 months

18 months

3- years

6- years

d

47.9

(4.6)

50.2

(12)

56.8

(11.7)

66.9

(12.6)

57.1

(14.5)

1.10

24.7

(8.2)

18.9

(9.9)

15.7

(11.2)

12.6

(10.9)

18.3

(11.3)

0.68

1.75

(0.62)

1.43

(0.73)

1.23

(0.73)

1.06

(0.79)

1.12

(0.74)

0.95

19.9

(9.5)

18.5

(11.8)

16.6

(12.5)

12.2

(10.3)

13.4

(9.95)

0.66

1.72

(0.48)

1.52

(0.57)

1.25

(0.62)

1.22

(0.64)

1.32

(0.62)

0.75

3.6

(1.7)

4.4

(1.9)

5.1

(2.3)

5.9

(2.2)

5.5

(1.85)

1.08

13.4

(4.8)

6.0

(5.8)

5.6

(5.6)

1.53