Definitions for magnitude of the effects, based on mean between-group differences63 64 74
| Slight/small | Moderate | Large/substantial |
| Pain intensity | ||
| 5–10 points on a 0–100-point VAS or equivalent | >10–20 points on a 0–100-point VAS or equivalent | >20 points on a 0–100-point VAS or equivalent |
| 0.5–1.0 points on a 0–10-point NRS or equivalent | >1–2 points on a 0–10-point NRS or equivalent | >2 points on a 0–10-point NRS or equivalent |
| Function* | ||
| 0.2–0.5 SMD | >0.5–0.8 SMD | >0.8 SMD |
*Function includes the secondary outcomes of emotion dysregulation, depression and anxiety.
NRS, Numeric Rating Scale; SMD, standard mean difference; VAS, Visual Analogue Scale.