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Table 4 Statistics of the FFI-Ar items

From: Foot Function Index for Arabic-speaking patients (FFI-Ar): translation, cross-cultural adaptation and validation study

Subscale Item no Scale mean if item deleted ± Standard deviation Corrected item-total correlation Cronbach's alpha if item deleted
Pain 1 31.92 14.562 0.550 0.876
2 33.26 14.118 0.643 0.869
3 32.66 14.052 0.696 0.864
4 32.94 14.26 0.65 0.87
5 33.10 13.99 0.82 0.85
6 33.56 14.08 0.77 0.86
7 36.36 14.68 0.48 0.88
8 36.40 14.60 0.52 0.88
9 32.84 14.18 0.57 0.88
Disability 10 32.64 18.21 0.78 0.92
11 31.46 17.97 0.81 0.93
12 30.36 18.08 0.79 0.93
13 31.34 18.01 0.80 0.93
14 31.72 18.36 0.70 0.93
15 31.46 17.81 0.76 0.93
16 32.52 18.42 0.68 0.93
17 32.44 18.04 0.82 0.93
18 30.22 18.12 0.70 0.93
Activity Limitation 19 8.78 8.86 0.71 0.81
20 9.92 9.61 0.54 0.85
21 8.06 9.27 0.62 0.83
22 10.42 8.66 0.72 0.80
23 10.34 8.56 0.72 0.80