Table 3.
Results of intention-to-treat analysis of outcomes by group
| Arthroscopy group | Control group | ||||
| At baseline | 9-month follow-up | At baseline | 9-month follow-up | Difference in mean change scores (95% CI)1,2 | |
| Kujala score, mean (SD) | 69.0 (10.7) | 81.9 (14.1) | 71.1 (13.0) | 82.5 (15.3) | 1.1 (-7.4 to 5.2) |
| Pain when descending stairs, VAS mean (SD) | 43.4 (27.2) | 21.1 (23.0) | 35.0 (26.9) | 18.0 (23.3) | 0.9 (-10.1 to 11.9) |
| Pain when ascending stairs, VAS mean (SD) | 48.8 (29.9) | 20.9 (24.7) | 41.1 (29.4) | 20.5 (24.9) | 2.6 (-10.0 to 15.2) |
| Pain when standing up from a sitting position, VAS mean (SD) | 39.0 (28.1) | 16.6 (22.4) | 41.4 (28.7) | 21.8 (25.3) | 4.1 (-7.0 to 15.2) |
1The difference is positive, when the mean change in score was greater for arthroscopy than for control group.
2Adjusted for baseline values.