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. 2019 Feb 28;6(1):e13111. doi: 10.2196/13111

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.