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Table 2 Percentage of patients classified into each clinical significance category by the Jacobson-Truax (JT) method and the Hageman-Arrindell (HA) method based on DASS-21 scale scores calculated across two time periods

From: Validity of clinically significant change classifications yielded by Jacobson-Truax and Hageman-Arrindell methods

 

DASS-21 Depression scale

DASS-21 Anxiety scale

DASS-21 Stress scale

 

JT method

HA method

JT method

HA method

JT method

HA method

Pre-treatment to post-treatment (n = 718)

 Recovered

57.5 %

42.1 %

36.8 %

19.1 %

58.9 %

46.7 %

 Improved

14.9 %

35.9 %

14.6 %

48.1 %

11.6 %

29.9 %

 Unchanged

25.5 %

19.9 %

46.4 %

31.3 %

27.1 %

21.0 %

 Deteriorated

2.1 %

2.1 %

2.2 %

1.5 %

2.4 %

2.4 %

Pre-treatment to six weeks post-treatment (n = 119)

 Recovered

49.5 %

37.8 %

36.1 %

18.5 %

56.3 %

47.9 %

 Improved

11.8 %

29.4 %

14.3 %

47.0 %

10.1 %

23.5 %

 Unchanged

34.5 %

28.6 %

47.9 %

32.8 %

23.5 %

18.5 %

 Deteriorated

4.2 %

4.2 %

1.7 %

1.7 %

10.1 %

10.1 %