Self-Rated Health Measurement in Aging Populations

Self-rated health (SRH) is a single-item, subjective appraisal of overall health status, typically elicited through responses ranging from “excellent” to “poor.” Despite its apparent simplicity, SRH integrates a person’s perceptions of physical conditions, mental well-being and social functioning, rendering it a robust predictor of morbidity, mortality and healthcare utilisation among older adults. Its strengths lie in ease of administration, low cost and capacity to capture dimensions of health not readily observable through objective measures alone. However, SRH is influenced by cultural norms, personal expectations and contextual factors such as education or socioeconomic status, requiring careful interpretation across populations. In ageing research, SRH has underpinned population surveys, clinical assessments and policy evaluations, guiding interventions aimed at promoting healthy longevity. Emerging work has examined the interplay between subjective reports and biomarkers of ageing, the temporal stability of SRH’s predictive validity and its role in health-equity analyses. Collectively, these studies underscore SRH’s global relevance and its practical applications in monitoring functional decline, informing resource allocation and tailoring patient-centred care for older individuals.

Research from Nature Portfolio

A large prospective cohort study of over 24 000 older adults in Norway established that a single-item SRH measure predicts all-cause mortality independently of clinical examinations, laboratory values and lifestyle factors. Poor SRH was associated with a more than twofold increase in mortality risk, with the strength of association varying over time. In the first five years of follow-up, poor SRH conferred a higher hazard ratio than after extended observation, highlighting a time-dependent effect. These findings confirm the methodological value of SRH as both a complement and, in some contexts, a proxy for objective assessments, while emphasising the need to interpret SRH in light of follow-up duration and evolving health trajectories.

Self-Rated Health Measurement in Aging Populations publication trend

The graph below shows the total number of articles in self-rated health measurement in aging populations across all publications each year (not limited to Nature Index journals).

Technical terms

Self-rated health (SRH): An individual’s subjective assessment of their overall health, usually on a multi-category scale from “excellent” to “poor.”

Epigenetic ageing: A biomarker of biological ageing estimated from DNA methylation patterns at specific genomic sites, reflecting cumulative molecular changes.

Frailty index: A composite measure of health status in older adults, calculated as the proportion of accumulated health deficits across clinical, functional and laboratory domains.

Cox proportional hazards regression: A statistical method used to examine the association between predictors (such as SRH) and the time until an event (such as death), yielding hazard ratios.

All-cause mortality: The incidence of death from any cause within a defined follow-up period, often used as a primary outcome in epidemiological studies.

References

1. Self-rated health, epigenetic ageing, and long-term mortality in older Australians. GeroScience (2024).
2. Self-reported health as a predictor of mortality: A cohort study of its relation to other health measurements and observation time. Scientific Reports (2020).
3. Self-rated health and objective health status as predictors of all-cause mortality among older people: a prospective study with a 5-, 10-, and 27-year follow-up. BMC Geriatrics (2020).
4. Self-rated health as a valid indicator for health-equity analyses: evidence from the Italian health interview survey. BMC Public Health (2019).