Fit statistics (location, residuals and p values) of the 10 items for the first random sample of 300
| Items | Initial solution | Rescore only disordered items to 01123* | Rescore all items to 01 123 | ||||||
| Location | Residuals | P values | Location | Residuals | P values | Location | Residual | P values | |
| Feel tired (1) | –0.42 | 4.28 | 0.000*† | 0.00 | 1.35 | 0.005 | –0.51 | 1.22 | 0.000† |
| Feel nervous (2) | –0.11 | –0.85 | 0.001† | –0.56 | –1.19 | 0.004† | –0.12 | –3.26 | 0.020 |
| Feel so nervous (3) | 0.13 | –3.16 | 0.000† | –0.32 | –3.65 | 0.002† | 0.05 | –4.13 | 0.002† |
| Feel hopeless (4) | –0.06 | −0.62 | 0.008* | 0.34 | –1.54 | 0.001† | –0.03 | –1.77 | 0.104 |
| Feel restless or fidgety (5) | –0.22 | 0.46 | 0.002† | –0.69 | 0.11 | 0.001*† | –0.26 | –1.93 | 0.302 |
| Feel so restless (6) | 0.08 | –3.11 | 0.000*† | –0.38 | –3.39 | 0.007 | 0.04 | –3.73 | 0.003† |
| Feel depressed (7) | 0.26 | 3.87 | 0.000*† | 0.74 | 3.00 | 0.000† | 0.35 | 3.18 | 0.000† |
| Everything was an effort (8) | –0.15 | –0.33 | 0.125* | 0.28 | –1.90 | 0.000† | –0.16 | –2.36 | 0.301 |
| Feel so sad (9) | 0.16 | –0.48 | 0.058 | 0.65 | –2.32 | 0.001† | 0.25 | –2.64 | 0.003† |
| Feel worthless (10) | 0.34 | 1.33 | 0.001† | –0.06 | 2.41 | 0.003† | 0.39 | 0.60 | 0.247 |
↵*Disordered items.
†P values depend on χ2 values (Bonferroni correction (p value/number of items))=0.05/10=0.005).