Table 1.
Summary of Item Performance on Rasch Criteria for Item Exclusion
| Item Description Problems with… | Total Scorea | Item Excluded | ||
|---|---|---|---|---|
| 2–5 years | 6–13 years | 14–17 years | ||
| Physical Functioningb | ||||
| Phys1. Walking | 0/3c | 1/5 | 1/3c | ✔ |
| Phys2. Running | 0/3 | 4/5 | 3/3 | |
| Phys3. Participating in exercise | 0/3 | 4/5 | 3/3 | |
| Phys4. Lifting something heavyd | – | – | – | ✔ |
| Phys5. Taking a bath or showerd | – | – | – | ✔ |
| Phys6. Doing choresd | – | – | – | ✔ |
| Emotional Functioning | ||||
| Emot1. Feeling afraid or scared | 4/5 | 2/5 | 2/5 | |
| Emot2. Feeling sad or blue | 1/5 | 5/5 | 0/5 | ✔ |
| Emot3. Feeling angry | 4/5 | 1/5 | 1/5 | |
| Emot4. Trouble sleeping | 2/5 | 0/5 | 2/5 | ✔ |
| Emot5. Worrying | 4/5 | 5/5 | 5/5 | |
| Social Functioning | ||||
| Soc1. Getting along with others | 0/5 | 0/5 | 0/5 | ✔ |
| Soc2. Others not wanting to be friends | 4/5 | 4/5 | 3/5 | |
| Soc3. Getting teased | 4/5 | 1/5 | 2/5 | |
| Soc4. Unable to do things others can do | 1/5 | 0/5 | 0/5 | ✔ |
| Soc5. Keeping up with other children | 0/5 | 0/5 | 0/5 | ✔ |
| School Functioning | ||||
| School1. Paying attention in class | –e | 0/5 | 2/5 | ✔ |
| School2. Forgetting things | –e | 0/5 | 0/5 | ✔ |
| School3. Keeping up with schoolwork | Only itemf | 0/5 | 4/5 | |
| School Absence | ||||
| SchAbs1. Missing school because sick | 2/5g | 4/5 | 3/5 | |
| SchAbs2. Missing school to go to doctor | 0/5g | 0/5 | 0/5 | ✔ |
Abbreviations: Emot Emotional Functioning, Phys Physical Functioning, SchAbs School Absence, School School Functioning, Soc Social Functioning
aTotal score = number of subsamples item performed well on all Rasch criteria (out of five subsamples)
bMost subsamples did not fit the Rasch model for the Physical Functioning dimension, thus supplemental Rasch analyses were conducted for items Phys1-Phys3. Results from the supplemental analyses are shown in the table
cInsufficient sample size to obtain five subsamples so only three subsamples were created for supplemental analyses (total score out of three)
dItems Phys4-Phys6 were omitted from the supplemental Rasch analyses, thus total scores were not calculated for these items. Refer to Results section for more details
eSchool1 and School2 are not included in the PedsQL for children under 5 years old
fOnly School3 is included in the PedsQL for this age group
gSchAbs1 and SchAbs2 were not administered for children aged 2–3 years in the LSAC so results reflect responses for children aged 4–5 years