Group 1

Group 2

Group 3

Group 4

Group 5

Group 6

Group 7

Group 8

n = 167

n = 182

n = 130

n = 141

n = 112

n = 146

n = 90

n = 255

Mean score

25.4

24.6

24.6

24.8

24.8

24.6

24.5

25.0