Number of items/domain
| PDQ-39 | PDQL | PIMS | PLQ | |
|---|---|---|---|---|
| Items are allocated to a particular domain on the basis of face value, or, in the case of ambiguity, on the basis of subscale allocation or factor structure, as presented by the scale developers in original study. | ||||
| Physical | 19 | 21 | 2 | 16 |
| Mental | 12 | 9 | 3 | 19 |
| Social | 8 | 7 | 5 | 9 |
| Total number of items | 39 | 37 | 10 | 44 |