Differences in Item Discrimination of the 25-Question Geriatric Locomotive Function Scale Between Younger and Middle-Aged Adults and Older Adults: An Analysis Using the Item Response Theory.

Key Points

• This study aims to analyze item discrimination of the Geriatric Locomotive Function Scale across age groups.
• Utilized Item Response Theory to assess item responses across age groups.
• Compared scores from younger and middle-aged adults to older adults.
• Statistical validation of item patterns across different age categories.
• Identified distinctive item patterns based on age among participants.
• Support for developing age-specific assessment tools for locomotive syndrome.
• Demonstrated the need for tailored screening methods for different age groups.