Table 3

Test-retest reliability of the online activity questionnaire (n=90)

ItemTest n (%)*Retest n (%)*Cohen's κ (95% CI)Proportion of agreement (95% CI)
Handball8 (8.9)10 (11.1)0.88 (0.71 to 1.00)0.98 (0.95 to 1.00)
Football16 (17.8)16 (17.8)0.92 (0.82 to 1.00)0.98 (0.95 to 1.00)
Basketball3 (3.3)3 (3.3)1.00 (1.00 to 1.00)1.00 (1.00 to 1.00)
Floorball5 (5.6)6 (6.7)0.90 (0.71 to 1.00)0.99 (0.97 to 1.00)
Volleyball3 (3.3)3 (3.3)1.00 (1.00 to 1.00)1.00 (1.00 to 1.00)
Martial arts8 (8.9)8 (8.9)1.00 (1.00 to 1.00)1.00 (1.00 to 1.00)
Gymnastics2 (2.2)2 (2.2)1.00 (1.00 to 1.00)1.00 (1.00 to 1.00)
Icehockey/bandy5 (5.6)5 (5.6)1.00 (1.00 to 1.00)1.00 (1.00 to 1.00)
Tennis/squash5 (5.6)4 (4.4)0.88 (0.66 to 1.00)0.99 (0.97 to 1.00)
Alpine/telemark skiing14 (15.6)13 (14.4)0.96 (0.87 to 1.00)0.99 (0.97 to 1.00)
Snowboarding8 (8.9)7 (7.8)0.93 (0.79 to 1.00)0.99 (0.97 to 1.00)
Dancing/aerobics13 (14.4)11 (12.2)0.81 (0.63 to 0.99)0.96 (0.91 to 1.00)
Cross-country skiing37 (41.1)39 (43.3)0.95 (0.89 to 1.00)0.98 (0.95 to 1.00)
Running52 (57.8)51 (56.7)0.93 (0.86 to 1.00)0.97 (0.93 to 1.00)
Cycling36 (40.0)38 (42.2)0.82 (0.70 to 0.94)0.91 (0.85 to 0.97)
Swimming8 (8.9)8 (8.9)1.00 (1.00 to 1.00)1.00 (1.00 to 1.00)
Strength training60 (66.7)62 (68.9)0.90 (0.80 to 1.00)0.96 (0.91 to 1.00)
Times per week0.94 (0.87 to 1.00)0.97 (0.93 to 1.00)
 0–118 (20.0)18 (20.0)
 2–343 (47.8)44 (48.9)
 4–522 (24.4)22 (24.4)
 >57 (7.8)6 (6.7)
Level I28 (31.1)29 (32.2)0.92 (0.84 to 1.00)0.97 (0.93 to 1.00)
Level II42 (46.7)40 (44.4)0.91 (0.82 to 1.00)0.96 (0.92 to 1.00)
Level III77 (85.6)77 (85.6)0.91 (0.79 to 1.00)0.98 (0.95 to 1.00)
Return to preinjury main sport40 (48.2)39 (47.0)0.98 (0.93 to 1.00)0.99 (0.97 to 1.00)
  • *Number of patients reporting to participate in the respective sports.