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Table 5 Fit statistics of Rasch analysis for the subscales of the DASS-21.

From: Psychometric evaluation of the depression, anxiety, and stress scale-21 (DASS-21) among Chinese primary and middle school teachers

 

Cross-sectional survey

Longitudinal survey

  

Wave 1

Wave 2

 

Eigenvalues ratio a

Eigenvalues

of residuals

PR

P-residual (SD)

Eigenvalues ratio a

Eigenvalues

of residuals

PR

P-residual

(SD)

Eigenvalues

ratio a

Eigenvalues

of residuals

PR

P-residual

(SD)

Depression

8.61

1.50

0.78

-0.16 (0.62)

5.69

1.55

0.70

-0.14 (0.69)

6.91

1.59

0.78

− 0.144 (0.65)

Anxiety

7.60

1.59

0.76

-0.15 (0.67)

5.07

1.69

0.70

-0.11 (0.76)

6.13

1.62

0.74

− 0.124 (0.73)

Stress

7.61

1.39

0.77

-0.13 (0.72)

5.18

1.51

0.78

-0.09 (0.82)

7.17

1.47

0.78

− 0.105 (0.78)

  1. a the ratio of first-to-second eigenvalues; PR = person reliability.
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BMC Psychology

ISSN: 2050-7283

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