OBJECTIVES: To assess the test-retest reliability and the construct validity of a modified version of the Lequesne index. METHODS: @entity1 with symptomatic @entity626 ( @entity571 ) fulfilling the revised criteria of the American College of Rheumatology completed the Lequesne index twice at a 3-h interval. Impairment outcome measures and @entity1 ' perceived discomfort in walking and handicap were recorded. An item-by-item analysis was performed. Items having insufficient psychometric properties were excluded. Test-retest reliability was assessed using the intra-class correlation coefficient (ICC) and the Bland and Altman method. Construct validity was investigated using Spearman rank correlation coefficient and a factor analysis was performed. RESULTS: Eighty-eight @entity1 were included. One question assessing @entity158 (question IE) had a weak reliability (Kappa (kappa) = 0.39) and was excluded. The test-retest reliability of the modified questionnaire was excellent (ICC = 0.95). Expected convergent and divergent correlations were achieved except for @entity227 ( @entity227 ) and VAS handicap (VAS H) (0.46 and 0.40, respectively), and the "a priori" double stratification was confirmed by factor analysis, explaining 48.7% of the variance. CONCLUSION: The modified form of the Lequesne index has sufficient psychometric properties to be used to assess @entity158 and function in knee @entity571 in a French population.

Assessment of the test-retest reliability and construct validity of a modified Lequesne index in XXXX .

@entity1 :: ('9606', 'Species') :: ['Patients', 'patients'] @entity227 :: ('MESH:D014786', 'Disease') :: ['VAS P', 'visual analog scale pain'] @entity626 :: ('MESH:D020370', 'Disease') :: ['knee osteoarthritis'] @entity571 :: ('MESH:D010003', 'Disease') :: ['OA'] @entity158 :: ('MESH:D010146', 'Disease') :: ['pain']
@entity626 :: (MESH:D020370,Disease) :: ['knee osteoarthritis']
