One way ANOVA for FIM ratings for the 3 groups demonstrated significant differences for both the motor subscale, F(2,46) = 34.71, p <. High test-retest reliability for 45 repeated FIM assessments for the motor, (ICC =. Memory misfit for the cognitive subscale. Bladder management, bowel management, and grooming were misfitting motor items. Hierarchical levels of FIM item difficulties were identified. Parametric statistical procedures were utilized to further analyze data.įIM motor and cognitive items formed 2 unidimensional and linear subscales. Motor and cognitive scores were converted into interval measures (logits) using Rasch Analysis with the BIGSTEPS statistical package. Subjects were evaluated twice using the FIM. Subjects were grouped according to their residence in either an Independent community (18 subjects), Sheltered Care (16 subjects), or Skilled Nursing Facility (15 subjects). The reliability, validity, and appropriateness of the Functional Independence Measure (FIM) were examined for a population aged 80 years and more from a multilevel, continuing care retirement community.įorty-nine residents (average age 89.7 years, range 80 to 104 years 46 women), were randomly selected. Development of accurate functional assessment instruments will help clinicians evaluate treatment outcome and plan realistic rehabilitation goals for elderly patients.
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