Comparison of questionnaire scoring used in the study
| SDQ-NL | SDQ-UK | SPADI | SRQ† | |
|---|---|---|---|---|
| *If more than two items in a domain are “not applicable”, the domain score is zero; †scoring was reversed so that scores increased with increasing shoulder problems; ‡“not applicable” option for sports/recreation added for this study; work questions only to be completed by those in paid work, students, and home carers. | ||||
| Total number of questions | 16 | 23 | 13 | 18 |
| Response options | Binary | Binary | VAS (0–11) | VAS ×1 (0–100) |
| 5 Point rating scale ×17 | ||||
| “Not applicable” option | Yes | Yes | Yes | Yes (sports+recreation/work questions‡) |
| Use of domains | – | – | Yes | Yes |
| Weighting of domains | – | – | – | Yes |
| Total or domain score(s) calculated relative to total applicable score | Yes | – | Yes* | Yes |
| Range of subtotal scores if all questions applicable | 0–16 | 0–23 | 0–100 | 17–100 |
| Range of total scores | 0–100 | 0–100 | 0–100 | 0–100 |