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Table 2 Floor and ceiling effects (percentage of respondents with minimum/maximum scale scores) for each item of the BrQ

From: Development and preliminary validation of Brace Questionnaire (BrQ): a new instrument for measuring quality of life of brace treated scoliotics

No of Item

Floor effect

Ceiling effect

1

1 (3.58%)

2 (7.14%)

2

0 (0.00%)

2 (7.14%)

3

2 (7.14%)

0 (0.00%)

4

2 (7.14%)

1 (3.58%)

5

3 (10.71%)

0 (0.00%)

6

1 (3.58%)

2 (7.14%)

7

1 (3.58%)

1 (3.58%)

8

0 (0.00%)

2 (7.14%)

9

1 (3.58%)

2 (7.14%)

10

1 (3.58%)

1 (3.58%)

11

1 (3.58%)

1 (3.58%)

12

1 (3.58%)

0 (0.00%)

13

0 (0.00%)

2 (7.14%)

14

0 (0.00%)

3 (10.71%)

15

1 (3.58%)

1 (3.58%)

16

1 (3.58%)

0 (0.00%)

17

0 (0.00%)

0 (0.00%)

18

0 (0.00%)

0 (0.00%)

19

0 (0.00%)

5 (17.86%)

20

1 (3.58%)

4 (14.29%)

21

0 (0.00%)

3 (10.71%)

22

0 (0.00%)

4 (14.29%)

23

1 (3.58%)

3 (10.71%)

24

1 (3.58%)

3 (10.71%)

25

0 (0.00%)

0 (0.00%)

26

0 (0.00%)

0 (0.00%)

27

1 (3.58%)

2 (7.14%)

28

1 (3.58%)

3 (10.71%)

29

1 (3.58%)

4 (14.29%)

30

1 (3.58%)

3 (10.71%)

31

1 (3.58%)

5 (17.86%)

32

0 (0.00%)

4 (14.29%)

33

1 (3.58%)

3 (10.71%)

34

2 (7.14%)

1 (3.58%)