What is the clinical evidence from this study?

Study design: Cohort. Population: functional decline (n=154). Intervention: Age ≥90 years vs. Age <90 years. Primary outcome: loss of independence and all-cause mortality (HR 3.07, 95% CI 1.54-6.11).

What does this research mean for the field?

In the oldest-old, chronological age and functional reserve predict loss of independence and mortality, whereas systolic blood pressure confers no excess risk. Novelty: ClaimNovelty.CONFIRMATORY. Consensus alignment: ConsensusAlignment.SUPPORTS_CONSENSUS.

What question did this study set out to answer?

To assess whether blood pressure, functional reserve markers, and chronological age predict loss of independence and mortality in community-dwelling oldest-old individuals.

September 1, 2026Aging and Health ResearchOpen Access

Age ≥90 years predicts ~207% higher mortality and loss of independence, unlike systolic blood pressure.

Q: What are the key findings of this study?

Age ≥90 years strongly predicted mortality (HR 3.07; 95% CI 1.54-6.11) and loss of independence (HR 5.06-5.52), whereas systolic blood pressure conferred no excess risk in this oldest-old cohort.

Q: What does this research mean for the field?

In the oldest-old, chronological age and functional reserve predict loss of independence and mortality, whereas systolic blood pressure confers no excess risk. Novelty: ClaimNovelty.CONFIRMATORY. Consensus alignment: ConsensusAlignment.SUPPORTS_CONSENSUS.

Q: What question did this study set out to answer?

To assess whether blood pressure, functional reserve markers, and chronological age predict loss of independence and mortality in community-dwelling oldest-old individuals.

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Why the study?

Optimal blood pressure targets in the oldest-old remain uncertain.

Population

154 community-dwelling residents aged ≥65 years in Ogimi, Okinawa

Comparison

Blood pressure and functional reserve metrics

Design

Observational cohort study of annual municipal health examinations

Key result

Age ≥90 years strongly predicted mortality (HR 3.07; 95% CI 1.54-6.11) and loss of independence (HR 5.06-5.52), whereas systolic blood pressure conferred no excess risk in this oldest-old cohort.

Authors

AKAkira Kimura SMShigeji Miyagi

Discussion

Member takes

Overview

Age dominates SBP for predicting mortality and loss of independence in the oldest-old; leaves open whether BP targets should differ in this group.

Key Points

To assess whether blood pressure, functional reserve markers, and chronological age predict loss of independence and mortality in community-dwelling oldest-old individuals.
Evaluated longitudinal data from 225 annual municipal health assessments among 154 community-dwelling residents aged ≥65 years in Ogimi, Okinawa between 2015 and 2024.
Tracked loss of independence via a long-term care insurance database alongside all-cause mortality, applying principal component analysis to physical and arterial metrics and fitting Cox models with multiple imputation.
Age ≥90 years was the strongest predictor of loss of independence (HR 5.06–5.52) and all-cause mortality (HR 3.07, 95% CI 1.54–6.11), whereas systolic blood pressure did not predict either outcome.
Individuals in the lowest functional reserve tertile demonstrated significantly worse independence-free survival (log-rank p = 0.036).
Incorporating functional reserve scores and pulse wave velocity coefficients alongside chronological age increased predictive discrimination for loss of independence from an AUC of 0.604 to 0.722.

Study Design

Type

Cohort (n=154)

Multicenter

Structured PICO

Population

154 community-dwelling residents aged ≥65 years in Ogimi Village, Okinawa, assessed between 2015 and 2024 for loss of independence and mortality.

Outcome

Loss of independence (LOI, long-term care insurance database) and all-cause mortalityhard clinical

Main Result

Hazard Ratio: 3.07 (95% CI 1.54–6.11)

In a longevity community, chronological age and functional reserve, rather than systolic blood pressure, were the primary predictors of loss of independence and mortality in the oldest-old.

Limitations

Observational findings are hypothesis-generating and are not evidence against antihypertensive treatment

Cite This Study

Kimura et al. (2026) conducted a cohort in functional decline (n=154). Age ≥90 years vs. Age <90 years was evaluated on loss of independence and all-cause mortality (HR 3.07, 95% CI 1.54-6.11). Age ≥90 years strongly predicted mortality (HR 3.07; 95% CI 1.54-6.11) and loss of independence (HR 5.06-5.52), whereas systolic blood pressure conferred no excess risk in this oldest-old cohort.

synapsesocial.com/papers/6aa500e050d1b974a3f2dd63 https://doi.org/10.1016/j.ahr.2026.100295

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September 1, 2026Aging and Health ResearchOpen Access

Age ≥90 years predicts ~207% higher mortality and loss of independence, unlike systolic blood pressure.

View Full Paper

Ask AI

Bookmark

Why the study?

Optimal blood pressure targets in the oldest-old remain uncertain.

Population

154 community-dwelling residents aged ≥65 years in Ogimi, Okinawa

Comparison

Blood pressure and functional reserve metrics

Design

Observational cohort study of annual municipal health examinations

Key result

Age ≥90 years strongly predicted mortality (HR 3.07; 95% CI 1.54-6.11) and loss of independence (HR 5.06-5.52), whereas systolic blood pressure conferred no excess risk in this oldest-old cohort.

Authors

AKAkira Kimura SMShigeji Miyagi

Discussion

Member takes

Overview

Age dominates SBP for predicting mortality and loss of independence in the oldest-old; leaves open whether BP targets should differ in this group.

Key Points

To assess whether blood pressure, functional reserve markers, and chronological age predict loss of independence and mortality in community-dwelling oldest-old individuals.
Evaluated longitudinal data from 225 annual municipal health assessments among 154 community-dwelling residents aged ≥65 years in Ogimi, Okinawa between 2015 and 2024.
Tracked loss of independence via a long-term care insurance database alongside all-cause mortality, applying principal component analysis to physical and arterial metrics and fitting Cox models with multiple imputation.
Age ≥90 years was the strongest predictor of loss of independence (HR 5.06–5.52) and all-cause mortality (HR 3.07, 95% CI 1.54–6.11), whereas systolic blood pressure did not predict either outcome.
Individuals in the lowest functional reserve tertile demonstrated significantly worse independence-free survival (log-rank p = 0.036).
Incorporating functional reserve scores and pulse wave velocity coefficients alongside chronological age increased predictive discrimination for loss of independence from an AUC of 0.604 to 0.722.

Study Design

Type

Cohort (n=154)

Multicenter

Structured PICO

Population

154 community-dwelling residents aged ≥65 years in Ogimi Village, Okinawa, assessed between 2015 and 2024 for loss of independence and mortality.

Outcome

Loss of independence (LOI, long-term care insurance database) and all-cause mortalityhard clinical

Main Result

Hazard Ratio: 3.07 (95% CI 1.54–6.11)

In a longevity community, chronological age and functional reserve, rather than systolic blood pressure, were the primary predictors of loss of independence and mortality in the oldest-old.

Limitations

Observational findings are hypothesis-generating and are not evidence against antihypertensive treatment

Cite This Study

synapsesocial.com/papers/6aa500e050d1b974a3f2dd63 https://doi.org/10.1016/j.ahr.2026.100295

Also Consider

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