Content validity of the comprehensive international classification of functioning, disability and health (ICF) core set for low back pain from the perspective of physicians: a Delphi survey.
OBJECTIVE
The 'Comprehensive ICF Core Set for low back pain (LBP)' is an application of the International Classification of Functioning, Disability and Health (ICF) and represents the typical spectrum of problems in functioning of patients with LBP. The objective of this study was to validate this ICF Core Set from the perspective of physicians.


METHODS
Physicians experienced in the treatment of LBP were asked about the patients' problems, patients' resources and aspects of environment that physicians take care of in a three-round survey using the Delphi technique. Responses were linked to the ICF.


RESULTS
Seventy-one physicians in 36 countries named 707 concepts that covered all ICF components. One hundred ninety-three ICF categories were linked to these answers. Three ICF categories were not represented in the Comprehensive ICF Core Set for LBP although at least 75% of the participants have rated them as important. Twenty-six concepts were linked to the not yet developed ICF component personal factors and 21 issues were not covered by the ICF.


CONCLUSIONS
The high percentage of ICF categories represented in the ICF Core Set for LBP indicates good content validity from the perspective of the physicians. However, some issues were raised that were not covered and need to be investigated further.
Department of Medical Informatics, Biometry and Epidemiology, Chair for Public Health and Health Care Research, Unit for Biopsychosocial Health, Ludwig-Maximilians Universität, Munich, Germany.
Catherine
C
Glocker
Inge
I
Kirchberger
Andrea
A
Gläßel
Agnes
A
Fincziczki
Gerold
G
Stucki
Alarcos
A
Cieza
D000328:Adult; D000368:Aged; D001291:Attitude of Health Personnel; D003697:Delphi Technique; D004185:Disability Evaluation; D005260:Female; D006305:Health Status Indicators; D006801:Humans; D017116:Low Back Pain / Q000145:classification* / Q000534:rehabilitation; D008297:Male; D008875:Middle Aged; D010820:Physicians; D011795:Surveys and Questionnaires