Group 1

Group 2

Group 3

Group 4

Group 5

Group 6

Group 7

Group 8

n = 277

n = 277

n = 295

n = 223

n = 112

n = 237

n = 90

n = 1126

Mean score^**

1.9

1.3

1.3

1.3

1.8

1.4

1.3

2.4