Table 1 Demographic information for women and men completing 1 year follow-up

Age

55.6 ± 8.4 (36–74)

54.5 ± 8.2 (35–69)

p = 0.42 (95% CI −1.6 to 3.8)

Height (CM)

164.5 ± 7.3 (146–185.4)

177.5 ± 7.6 (159–196)

p < 0.0001^# (95% CI − 15.4 to − 10.6)

BMI (KG/M²)

28.6 ± 5.6 (16.3–44.5)

28.9 ± 4.1 (18.5–38.3)

p = 0.7 (95% CI − 1.9 to 1.3)

 Active, full duties

10

15

p = 0.11

 Active, modified duties

5

11

 Active, on medical leave

5

9

 Sedentary, full duties

28

25

 Sedentary, modified duties

4

2

 Sedentary, on medical leave**

1

0

 Unemployed

6

1

 Disabled for other reasons**

1

0

 Retired, active, no limits

2

4

 Retired, active, limited

10

4

 Retired, sedentary

3

1

 Other**

1

0

 Never

51

49

p = 0.88

 Former

19

16

 Current

6

7

Diabetes mellitus

2

6

p = 0.12

 Workders comp

2

4

p = 0.37

 Accident litigation

8

0

p < 0.02*

 Right

68

68

p = 0.27

 Left

8

4

 % Dominant side operated

86%

58%

p = 0.0002*^#