Validity of International Classification of Functioning, Disability, and Health Core Set in Patients with Parkinson's Disease and the Correlation with Other Parkinson Scales

Abstract

Objectives: Idiopathic Parkinson’s Disease (IPD) is a movement disorderthat cause tremor, rigidity, bradykinesia, postural instability and deteriorationquality of life. To assess the disease different scales can be used: The UnifiedParkinson's Disease Rating Scale (UPDRS) for clinical severity, Parkinson’sDisease Questionnaire (PDQ39) to assess quality of life, Beck Depression Scale(BD) for mood assessment and Hoehn Yahr Scale (HY) for clinical staging.The International Classification of Functioning, Disability and Health (ICF) isa classification to develop an international common language for the evaluationof the functionality and disability of patients. We aimed to compare validity andefficacy of ICF classification with other scales. Materials and Methods: Thirty‑one patients with idiopathic Parkinson's disease were evaluated. PDQ39, UPDRS,Hoehn Yahr, Beck Depression Scale and 'Brief ICF core set for hand condition'which was recommended for Parkinson's disease were applied to patients. Thebrief ICF core set and other scales were compared and assessed if there wasany correlation. For analyzes, the MedCalc Statistical Software version 12.7.7programme was used. Results: The mean age of the IPD patients was 68.3 ± 6.9years and 71% of them were female (22) and 29% were male (9). According to ICFcodes, patients who have eight or more corrupted codes were recorded as 'majorcode impairment patients', and those with less than eight codes recorded as 'minorcode impairment patients’. The total UPDRS score of major code impairmentpatients was 58.4 ± 29.8, while the mean score of minor code impairment patientswas 21.2 ± 14.05. The PDQ39 score of major code impairment patients was 66.4± 24.1, while the mean score of minor code impairment patients was 19.3 ± 13.5.According to Hoehn Yahr stage, the ratio of stage 1 were higher in minor ICFpatients. Conclusion: While assessing the functioning of the Parkinson's diseasepatients, we need comprehensive scales that include many parameters. The ICFcoding system is an international system, which is very important to develop acommon language. The significant correlation between ICF coding system andother scales in our Parkinson's patients, shows the validity of the coding system.