Table 3.

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

Item	Test n (%)*	Retest n (%)*	Cohen’s κ (95 % CI)	Proportion of agreement (95 % CI)
Handball	8 (8.9)	10 (11.1)	0.88 (0.71–1.00)	0.98 (0.95–1.00)
Football	16 (17.8)	16 (17.8)	0.92 (0.82–1.00)	0.98 (0.95–1.00)
Basketball	3 (3.3)	3 (3.3)	1.00 (1.00–1.00)	1.00 (1.00–1.00)
Floorball	5 (5.6)	6 (6.7)	0.90 (0.71–1.00)	0.99 (0.97–1.00)
Volleyball	3 (3.3)	3 (3.3)	1.00 (1.00–1.00)	1.00 (1.00–1.00)
Martial arts	8 (8.9)	8 (8.9)	1.00 (1.00–1.00)	1.00 (1.00–1.00)
Gymnastics	2 (2.2)	2 (2.2)	1.00 (1.00–1.00)	1.00 (1.00–1.00)
Icehockey/bandy	5 (5.6)	5 (5.6)	1.00 (1.00–1.00)	1.00 (1.00–1.00)
Tennis/squash	5 (5.6)	4 (4.4)	0.88 (0.66–1.00)	0.99 (0.97–1.00)
Alpine/telemark skiing	14 (15.6)	13 (14.4)	0.96 (0.87–1.00)	0.99 (0.97–1.00)
Snowboarding	8 (8.9)	7 (7.8)	0.93 (0.79–1.00)	0.99 (0.97–1.00)
Dancing/aerobics	13 (14.4)	11 (12.2)	0.81 (0.63–0.99)	0.96 (0.91–1.00)
Cross-country skiing	37 (41.1)	39 (43.3)	0.95 (0.89–1.00)	0.98 (0.95–1.00)
Running	52 (57.8)	51 (56.7)	0.93 (0.86–1.00)	0.97 (0.93–1.00)
Cycling	36 (40.0)	38 (42.2)	0.82 (0.70–0.94)	0.91 (0.85–0.97)
Swimming	8 (8.9)	8 (8.9)	1.00 (1.00–1.00)	1.00 (1.00–1.00)
Strength training	60 (66.7)	62 (68.9)	0.90 (0.80–1.00)	0.96 (0.91–1.00)
Times per week			0.94 (0.87–1.00)	0.97 (0.93–1.00)
0–1	18 (20.0)	18 (20.0)
2–3	43 (47.8)	44 (48.9)
4–5	22 (24.4)	22 (24.4)
>5	7 (7.8)	6 (6.7)
Level I	28 (31.1)	29 (32.2)	0.92 (0.84–1.00)	0.97 (0.93–1.00)
Level II	42 (46.7)	40 (44.4)	0.91 (0.82–1.00)	0.96 (0.92–1.00)
Level III	77 (85.6)	77 (85.6)	0.91 (0.79–1.00)	0.98 (0.95–1.00)
Return to preinjury main sport	40 (48.2)	39 (47.0)	0.98 (0.93–1.00)	0.99 (0.97–1.00)

^*number of patients reporting to participate in the respective sports