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Table 2 Scale reliabilities of the DASS-21 and STAI

From: Herbal medicine use behaviour in Australian adults who experience anxiety: a descriptive study

 

Current study

General population normsa

Clinical population

Scale

M

SD

α

M

SD

α

M

SD

α

DASS-21 Stress

8.07

5.28

.91

3.99

4.24

.89

21.10b

11.15b

.93b

DASS-21 Depression

6.98

5.87

.94

2.57

3.86

.90

10.65b

9.30b

.96b

DASS Anxiety

5.82

5.14

.90

1.74

2.78

.79

10.90b

8.12b

.89b

STAI Trait

46.63

12.39

.94

36.35

11.39

.94

55c

10c

_d

STAI State

43.65

12.87

.94

33.16

11.69

.94

52c

13c

_ d

  1. Note. α Cronbach alpha, DASS Depression Anxiety Stress Scale, STAI State Trait Anxiety Inventory
  2. a Australian general population norms taken from [19]
  3. b Clinical population norms (anxiety or mood disorder diagnosis) for the DASS-21 taken from [21]
  4. c Clinical population norms (GAD diagnosis) for the STAI State and Trait scales taken from [22]
  5. d Not reported