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. 2020 Mar 13;8(3):e13561. doi: 10.2196/13561

Table 5.

Cronbach alpha coefficient if the item was deleted and corrected item-total correlation (N=2000).

Item Cronbach alpha if the item was deleted Corrected item-total correlation
1 .921 0.600
2 .922 0.585
3 .922 0.577
4 .921 0.632
5 .920 0.663
6 .920 0.649
7 .922 0.586
8 .921 0.637
9 .921 0.620
10 .921 0.617
11 .922 0.588
12 .922 0.592
13 .921 0.636
16 .920 0.652
17 .921 0.622
18 .921 0.634
19 .923 0.539
20 .922 0.596