ArticleBMC geriatrics2023
Association of frailty with influenza and hospitalization due to influenza among independent older adults: a longitudinal study of Japan Gerontological Evaluation Study (JAGES).
Article in BMC geriatrics, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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Who cites it
9 citing papers in PubMed, 10 citations in OpenAlex.
- Association of Frailty and Frailty Trajectory with Risk for Respiratory Infectious Diseases.Emerging infectious diseases · 2026Article
- Inflammation and Cardiac Dysfunction in Hospitalized Patients With Influenza: The FluHeart Study.Influenza and other respiratory viruses · 2026Article
- Physical frailty in relation to immunosenescence involving pDC function in the Japanese elderly: a cross-sectional survey study.Immunity & ageing : I & A · 2026Article
- State-of-the-art of the high dose influenza vaccine in Spain.Frontiers in immunology · 2026Review
- Risk Groups for Vaccine-Preventable Respiratory Infections in Children and Adults: An Overview of the Australian Environment.Vaccines · 2025Review
- Vaccinations in older adults: Optimization, strategies, and latest guidelines.Journal of the American Geriatrics Society · 2025Article
- Assessing the Impact of Frailty on Infection Risk in Older Adults: Prospective Observational Cohort Study.JMIR public health and surveillance · 2024Observational
- Association Between Frailty and Pelvic Organ Prolapse in Elderly Women: A Retrospective Study.International urogynecology journal · 2024Article
- Article
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Authors and funding
4 authors at 4 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundIt is unknown that whether frailty is a risk factor of influenza and the hospitalization among older adults, although it has been shown that frailty was associated with poor recovery from the hospitalization among those. We examined the association of frailty with influenza and the hospitalization and the effect by sex among independent older adults.
methodsWe used the longitudinal data from the Japan Gerontological Evaluation Study (JAGES), performed in 2016 and 2019 and conducted in 28 municipalities in Japan. The target population comprised 77,103 persons aged ≥ 65 years who did not need assistance from the public long-term care insurance. Primary outcome measures were influenza and hospitalization due to influenza. Frailty was evaluated with the Kihon check list. We estimated the risk of influenza, the hospitalization, those risks by sex, and the interaction for frailty and sex using Poisson regression adjusting for covariates.
resultsFrailty was associated with both influenza and the hospitalization among the older adults compared with nonfrail individuals after adjusting for covariates (influenza, frail: risk ratio {RR}: 1.36, 95% confidence interval {95% CI}: 1.20 - 1.53, and prefrail: RR: 1.16, 95% CI: 1.09 - 1.23; the hospitalization, frail: RR: 3.18, 95% CI: 1.84 - 5.57, and prefrail: RR: 2.13, 95% CI: 1.44 - 3.16). Male was associated with the hospitalization, but not associated with influenza compared to female (the hospitalization: RR: 1.70, 95% CI: 1.15 - 2.52 and influenza: RR: 1.01, 95% CI: 0.95 - 1.08). The interaction for frailty and sex was significant neither in influenza nor in the hospitalization.
conclusionThese results suggest that frailty is a risk of influenza and the hospitalization, that risks of the hospitalization are different by sex, but that the sex difference does not cause the effect heterogeneity of frailty on the susceptibility and severity among independent older adults.
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