In general , estimates of construct validity were lower when vali date d against dissimilar constructs , except for instruments measuring impairments in mental functions .
CONCLUSION There is a trend that validation against a similar construct yields higher correlation coefficients than validation against a dissimilar construct .
PURPOSE This paper focuses on the construct validity of instruments measuring impairments in body structures and function in rheumatic disorders .
The objective is : 1 ) to make an inventory of constructs , based on the domains of the International Classification of Functioning , Disabilities and Health problems ( ICF ) , against which instruments measuring impairments in body structures and function were vali date d ; 2 ) to analyse whether validation against a similar construct result ed in higher correlation coefficients than validation against a dissimilar construct .
Validity and reliability of the twenty-eight-joint count for the assessment of rheumatoid arthritis activity.
OBJECTIVE To investigate the validity of the 28-joint count for assessment of joint involvement in patients with rheumatoid arthritis ( RA ) . METHODS Joint involvement as determined by the 28- and the 66/68-joint count was compared using data from 735 prospect ively studied RA patients . RESULTS The joints included in the 28-joint count were more commonly involved than other joints , and findings from the 28-joint count correlated highly with those from the 66/68-joint count in all analyses . CONCLUSION The 28-joint count is a reliable and valid measure for joint assessment . It is easier to perform than the 66/68-joint count , and it addresses the joints that are critically involved
In general , estimates of construct validity were lower when vali date d against dissimilar constructs , except for instruments measuring impairments in mental functions .
CONCLUSION There is a trend that validation against a similar construct yields higher correlation coefficients than validation against a dissimilar construct .
PURPOSE This paper focuses on the construct validity of instruments measuring impairments in body structures and function in rheumatic disorders .
The objective is : 1 ) to make an inventory of constructs , based on the domains of the International Classification of Functioning , Disabilities and Health problems ( ICF ) , against which instruments measuring impairments in body structures and function were vali date d ; 2 ) to analyse whether validation against a similar construct result ed in higher correlation coefficients than validation against a dissimilar construct .