Total population

First group n = 75

Second group n = 71

Statistic test

Age (years)

46 (range 21 - 78)

48 (range 25 - 83)

n.s. (Mann-Whitney-U test)

Right/left side

39/36

28/43

n.s. (Fisher’s test)

Male/female

60/15

58/13

n.s. (Fisher’s test)

ASA classification

1/2

3

38/36

1

40/26

5

n.s. (Chi-square test)

Duration of surgery (min)

43 (range 15 - 84)

24 (range 15 - 60)

p = 0.0001 (Mann-Whitney-U test)

Time of hospitalisation (days)

4 (range 2 - 8)

3 (range 2 - 6)

p = 0.0001 (Mann-Whitney-U test)

Time between accident and skin incision (hours)

77 (range 5 - 168)

60 (range 10 - 165)

n.s. (Mann-Whitney-U test)