Table 1 Features of the two study samples
From: Development and validation of a Spanish translation of the Yale activity questionnaire
Feature | Preoperative sample (N = 44) | Follow-up sample (N = 64) |
|---|---|---|
Mean age (SD) | 58 (14) | 63 (14) |
Sex | ||
Female (%) | 36 (82%) | 51 (80%) |
Male (%) | 8 (18%) | 13 (20%) |
Joint operated upon* | ||
Knee (%) | 29 (67%) | 52 (81%) |
Hip (%) | 14 (33%) | 14 (22%) |
Educational attainment | ||
Less than high school graduate (%) | 34 (77%) | 50 (81%) |
High school graduate (%) | 10 (23%) | 12 (19%) |
Number of painful joints | ||
0-1 | 15 (34%) | 47 (81%) |
2 | 21 (48%) | 7 (12%) |
3 or more | 8 (18%) | 4 (7%) |
Health status measures (mean (SD)) | ||
WOMAC** pain | 55 (27) | 20 (24) |
WOMAC** function | 60 (27) | 17 (16) |
SF-36 physical activity*** | 26 (23) | 68 (25) |
EQ-5D | 0.56 (0.24) | 0.85 (0.15) |