Longitudinal patient-oriented outcomes in neuropathy: Importance of early detection and falls

TitleLongitudinal patient-oriented outcomes in neuropathy: Importance of early detection and falls
Publication TypeJournal Article
Year of Publication2015
AuthorsCallaghan, BC, Kerber, K, Langa, KM, Banerjee, M, Rodgers, A, McCammon, R, Burke, JF, Feldman, E
JournalNeurology
Volume85
Issue1
Pagination171-179
KeywordsHealth Conditions and Status, Medicare/Medicaid/Health Insurance, Methodology
Abstract

Objective: To evaluate longitudinal patient-oriented outcomes in peripheral neuropathy over a 14-year time period including time before and after diagnosis. Methods: The 1996 2007 Health and Retirement Study (HRS) Medicare Claims linked database identified incident peripheral neuropathy cases (ICD-9 codes) in patients 65 years. Using detailed demographic information from the HRS and Medicare claims, a propensity score method identified a matched control group without neuropathy. Patient-oriented outcomes, with an emphasis on self-reported falls, pain, and self-rated health (HRS interview), were determined before and after neuropathy diagnosis. Generalized estimating equations were used to assess differences in longitudinal outcomes between cases and controls. Results: We identified 953 peripheral neuropathy cases and 953 propensity-matched controls. The mean (SD) age was 77.4 (6.7) years for cases, 76.9 (6.6) years for controls, and 42.1 had diabetes. Differences were detected in falls 3.0 years before neuropathy diagnosis (case vs control; 32 vs 25 , p = 0.008), 5.0 years for pain (36 vs 27 , p = 0.002), and 5.0 years for good to excellent self-rated health (61 vs 74 , p 0.0001). Over time, the proportion of fallers increased more rapidly in neuropathy cases compared to controls (p = 0.002), but no differences in pain (p = 0.08) or self-rated health (p = 0.9) were observed. Conclusions: In older persons, differences in falls, pain, and self-rated health can be detected 3 5 years prior to peripheral neuropathy diagnosis, but only falls deteriorates more rapidly over time in neuropathy cases compared to controls. Interventions to improve early peripheral neuropathy detection are needed, and future clinical trials should incorporate falls as a key patient-oriented outcome.

DOI10.1212/WNL.0000000000001714
Endnote Keywords

Peripheral neuropathy/Peripheral neuropathy/Medicare/Propensity score

Endnote ID

999999

Citation Key8332
PubMed ID26019191
PubMed Central IDPMC4501944