Table 2.
Results of the secondary outcome measure (Knee Osteoarthritis Outcome Score).
| Outcome variables | Digital intervention group, median (IQRa) | Control group, median (IQR) |
P valueb | Estimate difference between groupsc | 95% CIc | |
| Baseline | ||||||
|
|
Symptoms | 34.0 (20.0) | 50.0 (29.0) | <.001 | –18.0 | –25.0 to –17.0 |
|
|
Pain | 33.0 (12.0) | 47.0 (24.0) | <.001 | –11.0 | –19.0 to –6.0 |
|
|
ADLd | 34.0 (18.0) | 41.0 (18.0) | .005 | –9.0 | –15.0 to –3.0 |
|
|
Sports | 0.0 (0.0) | 5.0 (8.0) | .006 | 0.0 | –5.0 to 0 |
|
|
Quality of life | 13.0 (19.0) | 25.0 (19.0) | .007 | –12.0 | –18.0 to 0 |
| At 3 months | ||||||
|
|
Symptoms | 87.5 (11.8) | 82.0 (19.5) | .01 | 9.0 | 0-15.0 |
|
|
Pain | 95.5 (11.8) | 86.0 (22.5) | <.001 | 11.0 | 5.0-17.0 |
|
|
ADL | 93.0 (8.0) | 87.0 (22.5) | .001 | 7.0 | 3.0-15.0 |
|
|
Sports | 30.0 (11.3) | 20.0 (7.5) | .001 | 10.0 | 5.0-15.0 |
|
|
Quality of life | 81.0.0 (14.5) | 56.0 (25.0) | <.001 | 19.0 | 12.0-25.0 |
| Change from baseline to 3 months | ||||||
|
|
Symptoms | 51.5 (24.25) | 25.0 (27.0) | <.001 | 25.0 | 15.0-35.0 |
|
|
Pain | 58.0 (12.0) | 31.0 (23.5) | <.001 | 23.0 | 15.0-31.0 |
|
|
ADL | 57.5 (17.8) | 35.0 (16.5) | <.001 | 20.0 | 13.0-27.0 |
|
|
Sports | 30.0 (11.3) | 15.0 (10.0) | <.001 | 10.0 | 10.9-15.0 |
|
|
Quality of life | 65.0 (22.0) | 44.0 (21.0) | <.001 | 25.0 | 18.0-37.0 |
| At 6 months | ||||||
|
|
Symptoms | 96.0 (15.0) | 86.0 (22.0) | .006 | 7.0 | 3.0-14.0 |
|
|
Pain | 100.0 (8.0) | 86.0 (23.5) | .002 | 11.0 | 3.0-16.0 |
|
|
ADL | 97.0 (6.0) | 87.0 (14.5) | .001 | 7.0 | 4.0-13.0 |
|
|
Sports | 42.5 (36.3) | 20.0 (22.5) | .003 | 15.0 | 5.0-30.0 |
|
|
Quality of life | 94.0 (12.0) | 63.0 (37.5) | .001 | 25.0 | 12.0-32.0 |
| Change from baseline to 6 months | ||||||
|
|
Symptoms | 60.5 (25.8) | 29.0 (33.5) | <.001 | 25.0 | 15.0-36.0 |
|
|
Pain | 61.0 (11.8) | 39.0 (24.0) | <.001 | 20.0 | 14.0-28.0 |
|
|
ADL | 58.0 (17.5) | 43.0 (23.0) | <.001 | 19.0 | 11.0-26.0 |
|
|
Sports | 40.0 (35.0) | 15.0 (27.5) | <.001 | 20.0 | 10.0-30.0 |
|
|
Quality of life | 81.0 (20.0) | 43.0 (40.5) | <.001 | 36.5 | 24.0-49.0 |
aIQR: interquartile range.
bMann-Whitney U test.
cHodges-Lehman estimator.
dADL: activities of daily living.