Feng-Hang Chang1, Nancy K Latham, Robert H Friedman, Alan M Jette. 1. Graduate Institute of Injury Prevention and Control, Taipei Medical University, Taipei City, Taiwan; Health and Disability Research Institute, School of Public Health, Boston University, Boston, Massachusetts.
Abstract
OBJECTIVES: To develop an interactive voice response (IVR) version of the Late-Life Function and Disability Instrument Computer Adaptive Test (LLFDI-CAT) and to evaluate its reliability and acceptability in older adults. DESIGN: The IVR system was embedded within the LLFDI-CAT program. To test the test-retest reliability and concordance of the IVR version of LLFDI-CAT with the telephone interviewer form (TIF), participants received the two versions of the LLFDI at baseline and at 1-week follow-up. SETTING: Community. PARTICIPANTS: Community-dwelling adults aged 65 and older (N = 50). MEASUREMENTS: The LLFDI is a self-reported outcome measure developed to assess function and disability in older adults. RESULTS: The IVR version of the LLFDI-CAT showed acceptable overall test-retest reliability (intraclass correlation coefficient (ICC) = 0.79-0.80) and concordance (ICC = 0.74-0.97) with the TIF. Although most participants preferred the TIF, the majority did not find the IVR version more difficult to use. CONCLUSION: The IVR version of the LLFDI-CAT achieved reliability levels that were comparable with those of the TIF version. Future work is needed to improve the IVR design to better fit older adults' needs and preferences.
OBJECTIVES: To develop an interactive voice response (IVR) version of the Late-Life Function and Disability Instrument Computer Adaptive Test (LLFDI-CAT) and to evaluate its reliability and acceptability in older adults. DESIGN: The IVR system was embedded within the LLFDI-CAT program. To test the test-retest reliability and concordance of the IVR version of LLFDI-CAT with the telephone interviewer form (TIF), participants received the two versions of the LLFDI at baseline and at 1-week follow-up. SETTING: Community. PARTICIPANTS: Community-dwelling adults aged 65 and older (N = 50). MEASUREMENTS: The LLFDI is a self-reported outcome measure developed to assess function and disability in older adults. RESULTS: The IVR version of the LLFDI-CAT showed acceptable overall test-retest reliability (intraclass correlation coefficient (ICC) = 0.79-0.80) and concordance (ICC = 0.74-0.97) with the TIF. Although most participants preferred the TIF, the majority did not find the IVR version more difficult to use. CONCLUSION: The IVR version of the LLFDI-CAT achieved reliability levels that were comparable with those of the TIF version. Future work is needed to improve the IVR design to better fit older adults' needs and preferences.
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