Missing item responses
|
0.9%
|
0.7%
|
Corrected item-total correlation, min-max
|
0.59 (item 6)–0.85 (items 1 and 7)
|
0.63 (item 16)–0.78 (item 7)
|
Total scores, n
|
92
|
96
|
Mean (SD)
|
30 (12.0)
|
13 (5.1)
|
Min-Max
|
16–59
|
7–25
|
Skewness
|
0.72
|
0.71
|
Floor/ceiling effects
|
10/0
|
19/0
|
Cronbach’s alpha
|
0.96
|
0.89
|
ICC (95% CI)
|
0.92 (0.88–0.95)
|
0.91 (0.86–0.94)
|
SEMa (% of possible scoring range)
|
3.4 (7)
|
1.6 (7)
|
SEMb (% of possible scoring range)
|
2.5 (5)
|
1.7 (8)
|
SDDc (% of possible scoring range)
|
9.6 (20)
|
4.3 (20)
|
SDDd (% of possible scoring range)
|
6.8 (14)
|
4.7 (21)
|