Cross-Cultural Adaptation and Clinimetric Testing of Functional Rating Index (FRI) Outcome Measure into the Arabic Language

Table 3

Reliability of the FRI-Ar.

FRI-Ar	ICC2,1 (95% CI)	SEM	MDC95%
Pain intensity	0.84 (0.78-0.89)	0.12	0.33
Sleeping	0.90 (0.86-0.93)	0.19	0.53
Personal care	0.86 (0.81-0.90)	0.13	0.36
Travel	0.67 (0.56-0.76)	0.14	0.39
Work	0.93 (0.91-0.95)	0.19	0.53
Recreation	0.86 (0.81-0.90)	0.19	0.53
Frequency of pain	0.92 (0.89-0.94)	0.14	0.39
Lifting	0.77 (0.69-0.84)	0.16	0.44
Walking	0.87 (0.82-0.91)	0.21	0.58
Standing	0.90 (0.86-0.93)	0.20	0.55
Total	0.85 (0.74-0.91)	1.17	3.24

Abbreviations: CI: confidence interval; ICC: intraclass correlation coefficient; FRI-Ar: Arabic version of Functional Rating Index; SEM: standard error of measurement.