Table 1.
Baseline demographics and characteristics. Values are mean (SD) unless otherwise specified
| Pain education | Usual care | |
|---|---|---|
| n = 31 | n = 29 | |
| Women, n | 22 | 18 |
| Age | 66 (9) | 66 (10) |
| BMI | 33 (5) | 33 (7) |
| Civil status, n | ||
| Cohabiting | 25 | 19 |
| Living alone | 6 | 10 |
| Daily smoker, n | 3 | 4 |
| Alcohol a, n | 5 | 2 |
| Educational level, n | ||
| No education | 10 | 10 |
| < 3 years | 8 | 4 |
| ≥ 3 years | 8 | 7 |
| Other | 5 | 8 |
| Work status, n | ||
| Employed | 6 | 8 |
| Sick leave | 3 | 2 |
| Retired | 22 | 19 |
| Pain medication in the past week | ||
| Paracetamol, n | 27 | 26 |
| Ibuprofen, n | 16 | 13 |
| Morphine or opioids, n | 10 | 2 |
| Amount of opioids/day, mg | 33 (32) | 10 (0) |
| Postoperative, n | ||
| Operated in knee or hip within 1 year | 3 | 3 |
| Complications within 30 days b | 1 | 1 |
| Rehabilitation c | 16 | 14 |
| Primary outcome | ||
| VAS during activity | 48 (18) | 49 (21) |
| Secondary outcome | ||
| VAS during rest | 19 (14) | 25 (17) |
| OKS | 21 (7) | 22 (6) |
| KOOS Pain (n = 58) | 40 (12) | 37 (17) |
| EQ5D (n = 55), median (range) | 0.66 | 0.72 |
| (0.16–0.83) | (–0.14 to 0.83) | |
| PSEQ | 33 (10) | 34 (8) |
| PCS, median (range) | 28 (23–48) | 29 (23–52) |
| 6-minute walk test | 387 (106) | 334 (103) |
| STS | 10.3 (3.2) | 9.2 (2.8) |
a
Consumption above recommendations (more than 1 unit of alcohol per day for women and 2 for men).
b
Infection or brisement forcй.
c
Community-based after the operation.
VAS, Visual Analog Scale; OKS, Oxford Knee Score;
KOOS, Knee Injury and Osteoarthritis Outcome Score;
EQ5D, EuroQol-5D; PSEQ, Pain Self-Efficacy Questionnaire;
PCS, Pain Catastrophizing Scale; STS, Sit-to-stand in 30 seconds.