Conceptual domain | Operational definition | Empirical measure | No. of items |
---|---|---|---|
Pain intensity | Current pain intensity (of the index pain, at the time of index consultation) | 0–10 NRS [8] | 1 |
Episode duration | Time since last whole month free from this pain | Episode duration [9] | 1 |
Multiple site/widespread pain | Current pain in sites other than the index site in the last month | Yes/no | 1 |
Pain interference with activities | Pain interference with daily activities in the past month (of the index pain) | 0–10 NRS [8] | 1 |
Depression | Low mood, anhedonia in the past month | Depression Screening questions for primary care [10] | 2 |
GP Prognostic Judgement | GP predicted outcome at 6 months | 6 item scale (completely recovered through to much worse) [adapted from 11] | 1 |