The influence of age on corrected motor FIM effectiveness

Tokunaga M, Nakanishi R, Eguchi G, Kihara K, Tokisato K, Katsura K, Watanabe S, Yamanaga H. The influence of age on corrected motor FIM effectiveness. Jpn J Compr Rehabil Sci 2014; 5: 56-60. Objective: This study aimed to clarify the influence of age on rehabilitation outcome by using corrected motor FIM (FIM-M) effectiveness, an outcome indicator in which the influence of FIM-M at admission was corrected. Methods: The subjects were 1,101 stroke patients. The value of A in the equation, Corrected FIM-M effectiveness = FIM-M gain / (A-FIM-M at admission) was set as 42, 64, 79, 83, 87, 89, and 91 points (for FIM-M score at admission of 13-18, 19-24, 25-30, 31-36, 37-42, 43-48, and 49-90 points, respectively). The subjects were divided into 10 groups by age with a 5-year range in which the average of corrected FIM-M effectiveness was calculated. Results: The mean corrected FIM-M effectiveness was almost constant in five groups below 69 years and decreased almost linearly as age increased in five groups over 70 years. Conclusion: The outcome decreases almost linearly after the age of 70 years old.