ABSTRACT
OBJECTIVE: To evaluate how upper limb impairment ratings are affected by updates to the AMA Guides to the Evaluation of Permanent Impairment (AMA Guides) Sixth Edition 2024 compared with the AMA Guides Sixth Edition 2008, and to investigate potential correlations with judicial, legislative, and economic factors. METHODS: Two expert evaluators reviewed 31 upper limb clinical vignettes from the 2008 and 2024 versions. The impairment ratings for each version were compared. RESULTS: After following the impairment ratings steps in each version, the results for 2024 showed no significant differences when compared with the impairment ratings generated using 2008 methods (Cohen's Kappa = 1.00). CONCLUSIONS: The updated AMA Guides Sixth Edition 2024 with improved, transparent processes and enhanced diagnosis-based impairment tables provides efficiency while retaining the accuracy, validity, and reliability of past versions of the AMA Guides.
ABSTRACT
OBJECTIVE: Describe and evaluate methodological improvements in AMA Guides to the Evaluation of Permanent Impairment (Guides) Sixth Edition 2024, including an updated sequential method and enhanced diagnosis-based impairment tables, compared to the Guides Sixth 2008. METHODS: Three physician experts and three pre-medical students, respectively, completed two rounds of impairment ratings using the AMA Guides Sixth 2008 vs. 2024 methods. Impairment values and completion times using each method were compared for both groups. RESULTS: Time to complete an impairment rating by experts averaged 3.5 minutes using Guides 2024 compared with 13.9 minutes using Guides 2008, with 100% accuracy and reliability for both. Students' time averaged 5.3 minutes and 15.9 minutes, respectively, with increased accuracy and reliability with Guides 2024. CONCLUSIONS: The Guides Sixth 2024 allowed more-efficient impairment ratings while retaining accuracy, consistency, reliability, and reproducibility.
