Skip to main content

Table 3 Individual item fit statistics for the final models of the revised DASS-21 subscales

From: Rasch model analysis of the Depression, Anxiety and Stress Scales (DASS)

Item no.

Item

Location value

SE

Fit Resid

ChiSq

Prob

 

DASS-21-Depression

     

3

I couldn't seem to experience any positive feeling at all

0.059

0.101

0.742

3.107

0.54

10

I felt that I had nothing to look forward to

0.048

0.097

-1.477

8.234

0.08

13

I felt down-hearted and blue

-1.100

0.089

0.685

5.280

0.26

16

I was unable to become enthusiastic about anything

-0.120

0.097

-0.284

8.884

0.06

17

I felt I wasn't worth much as a person

0.296

0.099

-0.248

3.719

0.45

21

I felt that life was meaningless

0.817

0.109

-0.680

9.191

0.06

 

DASS-21-Anxiety

     

4

I experienced breathing difficulty

0.115

0.086

-0.210

7.169

0.13

7

I experienced trembling (e.g. in the hands)

0.108

0.086

-0.413

5.858

0.21

9

I was worried about situations in which I might panic and make a fool of myself

-0.483

0.077

0.361

2.220

0.70

15

I felt I was close to panic

0.061

0.087

-1.836

13.075

0.01

19

I was aware of the action of my heart in the absence of physical exertion

-0.100

0.083

0.304

5.257

0.26

20

I felt scared without any good reason

0.298

0.090

-1.311

6.987

0.14

 

DASS-21-Stress

     

1

I found it hard to wind down

-0.552

0.070

0.600

6.544

0.16

6

I tended to over-react to situations

0.001

0.070

0.313

3.490

0.48

8

I felt that I was using a lot of nervous energy

0.313

0.070

0.107

3.117

0.54

12

I found it difficult to relax

-0.145

0.072

-2.648

14.029

0.007

14

I was intolerant of anything that kept me from getting on with what I was doing

0.346

0.074

1.059

4.195

0.38

18

I felt that I was rather touchy

0.038

0.072

-1.033

10.712

0.03

  1. SE = Standard error, Fit Resid = Fit Residual, ChiSq = Chi-square, prob = probability
  2. Anxiety: Fit Residual df = 208, Chi square df = 4
  3. Depression: Fit Residual df = 226.33, Chi square df = 4
  4. Stress: Fit Residual df = 319.67, Chi square df = 4