COMT group

Short-term EWL

Time after surgery

(2008-2010)

COMT group

Long-term EWL

Time after surgery

(2004-2007)

AA, Group I (n = 8)

GA, Group II (n = 13)

GG, Group III (n = 6)

Sum of squares

df

Mean squares

F

p

η²

28.62^II

47.86^I,III

23.62^II

3169.30

2

1584.65

6.21

0.007

0.34

AA Group I (n = 20)

GA Group II (n = 17)

GG Group III (n = 10)

Sum of squares

df

Mean squares

F

p

η²

45.35

41.78

42.21

134.96

2

67.48

0.12

0.890

0.01