1

2

3

4

5

Mean Rating

Under 30 years

29

18

12

18

23

2.88 ± 0.39

31 - 45 years

13

0

21

30

36

3.77 ± 0.19

46 - 60 years

11

7

14

17

51

3.92 ± 0.16

Over 60 years

12

3

14

22

48

3.94 ± 0.14