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Set of questionnaires (respondent)
BEHAVIORAL
2 trials
Sponsors
Kovacs Foundation
Conditions
Low Back Pain
Unknown Phase
WHODAS-II for Patients With Nonspecific Low Back Pain
Terminated
NCT00479245
Kovacs Foundation
Low Back Pain
Start: 2007-04-30
End: 2011-04-30
Target: 200
Updated: 2011-06-28
The Influence of Different Factors on Workers' Disability Due to Low Back Pain
Completed
NCT00667316
Kovacs Foundation
Low Back Pain
Start: 2008-02-29
End: 2021-12-31
Target: 7300
Updated: 2025-09-04
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