COSMIN database

Construct validity of instruments measuring impairments in body structures and function in rheumatic disorders: which constructs are selected for validation? A systematic review

Authors:
Swinkels, R. A., Bouter, L. M., Oostendorp, R. A., Swinkels-Meewisse, I. J., Dijkstra, P. U., and de Vet, H. C.
Abstract:
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 validated; 2) to analyse whether validation against a similar construct resulted in higher correlation coefficients than validation against a dissimilar construct.

METHODS: In a systematic review papers were identified in which instruments measuring impairments in body structures and function for patients with rheumatic disorders were validated. The instruments identified were assessed on their methodological properties and the constructs against which they were validated. Subsequently, pooled (interclass) correlations of similar constructs and dissimilar constructs against which was validated were compared. An instrument was decided to have good construct validity, if the correlation coefficient was 0.50 or higher, and the measurement instrument in question is validated against similar constructs.

RESULTS: In total 216 papers were identified analysing the validity of 42 different instruments. Only 16% of these instruments were validated against instruments that represent the most similar construct. In general, estimates of construct validity were lower when validated 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. If an instrument measuring impairments is validated against the most similar construct, and a criterion of r > 0.50 is applied, only 10 out of the 42 identified instruments turned out to be valid
URL:
PM:16539827
https://www.ncbi.nlm.nih.gov/pubmed/16539827
Journal:
Clin.Exp.Rheumatol
Publication year:
2006
pages:
93-102
Biological and physiological variables:
Biological and physiological variables
Symptom status:
Cognitive/mental state
Physical state
Age:
Adults (18-65)
Seniors (65+)
Disease:
Diseases of and symptoms related to the musculoskeletal system and connective tissue
PRO / non-PRO:
Non-patient Reported Outcome
Patient Reported Outcome
Type of measurement instrument:
1 - Questionnaires
4 - Performance-based tests
6 - Clinical rating scales
7 - Observations
Instrument:
AHI - Arthritis Helplessness Index
AI - Articular Index
AIMS2 - Arthritis Impact Measurement Scales 2   [see: ZUYD (NL)]
AIMS - Arthritis Impact Measurement Scales (Also short AIMS and shortened AIMS)
AIMS-D - Arthritis Impact Measurement Scale-Dutch   [see: ZUYD (NL)]
BASDAI - Bath Ankylosing Spondylitis Disease Activity Index
BASMI - Bath Ankylosing Spondylitis Metrology Index
BDI - Beck Depression Inventory   [see: ZUYD (NL)]
Chest - Chest Expansion
D-AIMS-2 - Dutch Arthitis Impact and Measurement Scales-
DoL - Dolorimeter
EI - Enthesis Index
EPM - Escola Paulista de Medicina Range of Motion Scale   [see: ZUYD (NL)]
FFD - Finger Floor Distance
Goniometry / Goniometer   [see: ZUYD (NL)]
Grippit
MobSpine - Mobility assessment spine in ankylosing spondylitis
MPQ - McGill Pain Questionnaire    [see: ZUYD (NL)]
MS-D - Morning Stiffness, duration
MS-S - Morning Stiffness, Severity
sAIMS - Shortened Arthritis Impact Measurement Scales
SAJ - Self Assessment Joint Count
Shob - Shobert’s test
Sphygmomanometer (handheld dynamometer)
Spondylometer (Dunham)
SSAI - Spielberger State-Anxiety Inventory
STAI - State-Trait Anxiety Inventory
Stest - Stiffness test
VAS-S - Visual Analogue Scale Stiffness
VAS - Visual Analogue Scale   [see: ZUYD (NL)]