Table 4.

Results of the normalization analysis using the Shapiro-Wilk test.

Item	Shapiro-Wilk test P value	Score, mean (SD)
1	<.001	6.704 (0.773)
2	<.001	6.76 (0.723)
3	<.001	6.6 (0.823)
4	<.001	5.912 (1.426)
5	<.001	6.248 (1.175)
6	<.001	6.24 (1.103)
7	<.001	6.232 (1.086)
8	<.001	5.784 (1.543)
9	<.001	5.992 (1.292)
10	<.001	6.544 (0.875)
11	<.001	6.456 (1.096)
12	<.001	6.312 (1.066)
13	<.001	5.968 (1.373)
14	<.001	5.472 (1.532)
15	<.001	5.408 (1.498)
16	<.001	5.32 (1.511)
17	<.001	4.848 (1.778)
18	<.001	5.416 (1.52)