Table 1.

Mean Pain and Sleep Questionnaire three-item index (PSQ-3-FI) scores.

Question	Item	Mean (95% CI)	Range	ICC
1	How often have you had trouble falling asleep because of pain?	2.5 (2.1–2.8)	0–9	0.55
2	How often have you been awakened by pain during the night?	2.4 (2.0–2.8)	0–10	0.52
3	How often have you been awakened by pain in the morning?	2.0 (1.7–2.4)	0–10	0.74
Total		6.9 (6.0–7.8)	0–32	0.61

Confidence interval (CI); Intraclass correlation (ICC).