Table 1 Characteristics of participants

Age (yr)

30.7 (± 6.4)

30.6 (± 7.1)

28.3 (± 4.0)

0.58

Male, n (%)

19 (59%)

18 (72%)

8 (89%)

0.24

BMI (kg/m²)

24.4 (± 3.2)^c

27.0 (± 3.6)^c

24.6 (± 3.8)

0.02*

Time from surgery to baseline assessment (yr)

2.5 (± 0.4)

2.5 (± 0.4)

Not applicable

0.92

Time between baseline and follow-up assessments (yr)

2.1 (± 0.2)^a

2.0 (± 0.2)^b

2.9 (± 0.4)^{a, b}

< 0.001*

Sports activity level at baseline

85 (80, 95)

80 (75, 95)

90 (78, 98)

0.57

Sports activity level at follow-up

85 (80, 95)

80 (65, 95)

90 (78, 98)

0.58