ArticleJournal of the American Geriatrics Society2020
Multimorbidity in Medicare Beneficiaries: Performance of an ICD-Coded Multimorbidity-Weighted Index.
Article in Journal of the American Geriatrics Society, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers, 1 of them a synthesis that pooled it.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
26 citing papers in PubMed, 1 synthesis or guideline pooled it.
- Pooled it
- Validating ICD code case definitions for condition case ascertainment in multimorbidity measurement: a retrospective chart review.The journals of gerontology. Series A, Biological sciences and medical sciences · 2026Article
- The association between multimorbidity and arteriovenous fistula creation outcomes.Journal of vascular surgery · 2026Article
- Social determinants of intersectional inequalities in multimorbidity and its burden in China: a multilevel analysis of individual heterogeneity and discriminatory accuracy (MAIHDA).International journal for equity in health · 2026Article
- Bio-Inspired Artificial Intelligence Multimorbidity Score for Human-Machine Clinical Risk Stratification.Cyborg and bionic systems (Washington, D.C.) · 2026Article
- Comorbidities and comorbidity burden in patients with neurocognitive disorders: findings from the MEMORA Cohort Study.European geriatric medicine · 2025Article
- Article
- Longitudinal Trajectories of Multimorbidity and Psychosocial Resilience Resources in Midlife and Older Adults: Findings From the Health and Retirement Study.Journal of aging and health · 2025Article
- Health octo tool matches personalized health with rate of aging.Nature communications · 2025Article
- Trends in antipsychotic prescribing among community-dwelling older adults with dementia, 2010-2018.Health affairs scholar · 2025Article
- Capturing the care of complex community-based health center patients: A comparison of multimorbidity indices and clinical classification software.Health services research · 2025Article
- Validity of the Chinese multimorbidity-weighted index in measuring disease burden using health check-ups data in primary care.BMC public health · 2024Article
- Observational
- Medication and Road Test Performance Among Cognitively Healthy Older Adults.JAMA network open · 2023Article
- Readmissions and postdischarge mortality by race and ethnicity among Medicare beneficiaries with multimorbidity.Journal of the American Geriatrics Society · 2023Article
- Multimorbidity, 30-Day Readmissions, and Postdischarge Mortality Among Medicare Beneficiaries Using a New ICD-Coded Multimorbidity-Weighted Index.The journals of gerontology. Series A, Biological sciences and medical sciences · 2023Article
- K-medoids clustering of hospital admission characteristics to classify severity of influenza virus infection.Influenza and other respiratory viruses · 2023Article
- Multimorbidity and long-term disability and physical functioning decline in middle-aged and older Americans: an observational study.BMC geriatrics · 2022Observational
- Comparing the association between multiple chronic conditions, multimorbidity, frailty, and survival among older patients with cancer.Journal of geriatric oncology · 2022Article
- Multimorbidity and Inpatient Utilization Among Older Adults with Opioid Use Disorder in New York City.Journal of general internal medicine · 2022Article
Corrections and comments
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Authors and funding
3 authors.
Funding
Abstract
objectivesMost older adults have multimorbidity that impairs physical functioning, but it is difficult to quantify using claims data. We previously developed and validated a multimorbidity-weighted index (MWI) that embeds physical functioning through disease weightings. We mapped these conditions to International Classification of Diseases, Ninth Revision, Clinical Modification (ICD-9-CM) codes and compared them with existing indices.
designPopulation-based prospective cohort.
settingRespondents to the 2006-2016 waves of the Health and Retirement Study (HRS) with linked Medicare claims data and continuous enrollment in 2006.
participantsCommunity-dwelling Medicare-eligible HRS participants (N = 9923; mean age = 75.5 ± 8.5 y). MEASUREMENTS: Individuals were followed for future physical functioning (2006-2014) and mortality (2007-2016). MWI conditions were mapped to ICD-9-CM codes to produce an ICD-coded MWI (MWI-ICD). We compared MWI-ICD, simple disease count, Charlson, Elixhauser, and the health-related quality of life comorbidity index (HRQOL-CI) through distributions, hazard ratios for mortality, and relationships with future physical functioning.
resultsMWI-ICD exhibited the broadest distribution and most unique values (5891). Left censoring was most pronounced for Charlson (34.3% score = 0) and Elixhauser (13.1% score = 0) vs MWI (5.0% score = 0). Hazard ratios and concordance (C)-statistics for mortality across extreme quartiles were similar for MWI-ICD, Elixhauser, and Charlson but lower for disease count and the HRQOL-CI. For physical functioning, MWI-ICD yielded the greatest contrast across extreme quartiles and overall coefficient of determination (R
conclusionMWI-ICD was significantly associated with mortality and future physical functioning and comparable with established metrics for mortality prediction although not weighted to mortality. MWI-ICD successfully captures diseases accumulation and functioning in claims data. J Am Geriatr Soc 68:999-1006, 2020.
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