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 |