Table 1 Item scaling tests for the adult PedsQL™ NF1 module subscalesª
Subscale | Items b | Range of item correlations | Item scaling tests | ||
|---|---|---|---|---|---|
Item-Internal consistency c | Item-Discriminant validity d | # Success/Total e | Scaling success rate (%) | ||
Physical Functioning | 7 | .69-.85 | .01 -.67 | 72/98 | 73.47 |
Emotional Functioning | 5 | .69-.85 | .18 -.52 | 64/70 | 91.43 |
Social Functioning | 2 | .58 | .14 -.47 | 12/28 | 42.86 |
Cognitive Functioning | 5 | .77-.90 | .08-.46 | 70/70 | 100 |
Communication | 3 | .58-.81 | .12 -.49 | 38/42 | 90.48 |
Worry | 6 | .34-.79 | .01 -.56 | 51/84 | 60.71 |
Perceived Physical Appearance | 3 | .72-.85 | .02 -.55 | 38/42 | 90.48 |
Pain and Hurt | 3 | .80-.93 | .15 -.76 | 25/42 | 59.52 |
Paresthesias | 2 | .77 | .16 -.72 | 16/28 | 57.14 |
Skin Irritation | 5 | .48-.76 | .08 -.53 | 39/70 | 55.71 |
Sensation | 4 | .43-.64 | .04 -.46 | 39/56 | 69.64 |
Movement and Balance | 4 | .74-.84 | .08 -.69 | 38/56 | 67.86 |
Daily Activities | 12 | .59-.89 | .01 -.65 | 140/168 | 83.33 |
Fatigue | 3 | .78-.83 | .21-.60 | 30/42 | 71.43 |
Treatment Anxiety | 3 | .55-.86 | .11 -.45 | 34/42 | 80.95 |