Table 2.
Results of Rasch analyses
| Analysis | Overall model fit | Item fit residual mean (SD) | Person fit residual mean (SD) | % significant t-tests | Coefficient Alpha (Grading) | Person locations |
|---|---|---|---|---|---|---|
| SIQTR-5 |
||||||
| Initial fit |
χ2 = 6.639 (d f= 5), p = .249 |
-0.786 (0.922) |
-0.136 (0.548) |
na |
0.705 |
M = -1.238 |
| |
|
|
|
|
Moderate |
SD = 1.131 |
| Final fit |
χ2 = 7.320 (d f= 6), p = .292 |
-0.503 (0.928) |
-0.069 (0.583) |
na |
na |
M = -1.324 |
| |
|
|
|
|
|
SD = 1.161 |
| SITBI-11 |
||||||
| Initial fit |
χ2 = 52.463 (d f= 22), p = .0003 |
-0.271 (1.384) |
-0.186 (0.649) |
0.42% |
0.716 |
M = -1.662 |
| |
|
|
|
|
Fair |
SD = 1.295 |
| Final fit |
χ2 = 46.978 (d f= 26), p = .007 |
-0.254 (1.162) |
-0.202 (0.649) |
na |
na |
M = -1.629 |
| |
|
|
|
|
|
SD = 1.325 |
| DSHI-16 |
||||||
| Initial fit |
χ2 = 33.957 (d f= 32), p = .373 |
-0.278 (1.165) |
-0.185 (0.351) |
1.69% |
0.783 |
M = -3.117 |
| |
|
|
|
|
Fair |
SD = 1.159 |
| Final fit |
χ2 = 30.790 (d f= 24), p = .160 |
-0.127(1.209) |
-0.254 (0.560) |
na |
na |
M = -2.495 |
| |
|
|
|
|
|
SD = 1.136 |
| ISAS-12 |
||||||
| Initial fit |
χ2 = 38.299 (d f= 24), p = .032 |
-0.278 (0.962) |
-0.123 (0.713) |
1.81% |
0.826 |
M = -1.872 |
| |
|
|
|
|
Fair |
SD = 1.358 |
| Final fit |
χ2 = 23.441 (d f= 18), p = .174 |
-0.171 (0.883) |
-0.164 (0.700) |
na |
na |
M = -1.802 |
| |
|
|
|
|
|
SD = 1.185 |
| SHIF-16 |
|
|
|
|
|
|
| Initial fit |
χ2 = 150.982 (d f= 64), p = .000 |
-0.731(1.951) |
-0.210 (0.454) |
1.6% |
0.794 |
M = -2.484 |
| Fair |
SD = 1.195 |
|||||
| Final fit |
χ2 = 70.304 (d f= 46), p = .012 |
-0.708 (1.174) |
-0.290 (0.676) |
na |
na |
M = -1.828 |
| SD = 1.012 | ||||||
| SHI-22 |
|
|
|
|
|
|
| Initial fit |
χ2 = 289.355 (d f= 154), p = .000 |
-0.537 (1.740) |
-0.179 (0.712) |
5.50% (3.7-7.3) |
0.814 |
M = -2.051 |
| Fair |
SD = 1.280 |
|||||
| Final fit |
χ2 = 201.992 (df =153), p = .005 |
-0.460 (1.220) |
-0.215 (0.764) |
na |
na |
M = -1.944 |
| SD = 1.201 | ||||||
| Ideal Values |
Probabilities greater than Bonferroni adjusted p values (i.e., 0.05 divided by the number of significance tests) |
Mean = 0.0 |
Mean = 0.0 |
Less than 5% |
Fair or bettera |
M = 0.0 |
| (SD = 1.0) | (SD = 1.0) |
aGradings based on Ponterotto & Ruckdeschel [58] and take into account number of items and sample sizes.