Article

The aims of this study were to translate the numeric rating scale (NRS)
into Arabic and to evaluate the test-retest reliability and convergent validity
of an Arabic Numeric Pain Rating Scale (ANPRS) for measuring pain in
osteoarthritis (OA) of the knee. METHODS: The English version of the NRS was
translated into Arabic as per the translation process guidelines for
patient-rated outcome scales. One hundred twenty-one consecutive patients with OA
of the knee who had experienced pain for more than 6 months were asked to report
their pain levels on the ANPRS, visual analogue scale (VAS), and verbal rating
scale (VRS). A second assessment was performed 48 h after the first to assess
test-retest reliability. The test-retest reliability was calculated using the
intraclass correlation coefficient (ICC2,1). The convergent validity was assessed
using Spearman rank correlation coefficient. In addition, the minimum detectable
change (MDC) and standard error of measurement (SEM) were also assessed. RESULTS:
The repeatability of ANPRS was good to excellent (ICC 0.89). The SEM and MDC were
0.71 and 1.96, respectively. Significant correlations were found with the VAS and
VRS scores (p <0.01). CONCLUSIONS: The Arabic numeric pain rating scale is a
valid and reliable scale for measuring pain levels in OA of the knee.
Implications for Rehabilitation The Arabic Numeric Pain Rating Scale (ANPRS) is a
reliable and valid instrument for measuring pain in osteoarthritis (OA) of the
knee, with psychometric properties in agreement with other widely used scales.
The ANPRS is well correlated with the VAS and NRS scores in patients with OA of
the knee. The ANPRS appears to measure pain intensity similar to the VAS, NRS,
and VRS and may provide additional advantages to Arab populations, as Arabic
numbers are easily understood by this population.

Langue : ANGLAIS