Social Vulnerability, Frailty and Mortality in Elderly People
Why this work is in the frame
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Bibliographic record
Abstract
Background: Social vulnerability is related to the health of elderly people, but its measurement and relationship to frailty are controversial.The aims of the present study were to operationalize social vulnerability according to a deficit accumulation approach, to compare social vulnerability and frailty, and to study social vulnerability in relation to mortality.Methods and Findings: This is a secondary analysis of community-dwelling elderly people in two cohort studies, the Canadian Study of Health and Aging (CSHA, 1996/7-2001/2; N = 3707) and the National Population Health Survey (NPHS, 1994(NPHS, -2002;; N = 2648).Social vulnerability index measures that used self-reported items (23 in NPHS, 40 in CSHA) were constructed.Each measure ranges from 0 (no vulnerability) to 1 (maximum vulnerability).The primary outcome measure was mortality over five (CHSA) or eight (NPHS) years.Associations with age, sex, and frailty (as measured by an analogously constructed frailty index) were also studied.All individuals had some degree of social vulnerability.Women had higher social vulnerability than men, and vulnerability increased with age.Frailty and social vulnerability were moderately correlated.Adjusting for age, sex, and frailty, each additional social 'deficit' was associated with an increased odds of mortality (5 years in CSHA, odds ratio = 1.05, 95% confidence interval: 1.02-1.07;8 years in the NPHS, odds ratio = 1.08, 95% confidence interval: 1.03-1.14).We identified a meaningful survival gradient across quartiles of social vulnerability, and although women had better survival than men, survival for women with high social vulnerability was equivalent to that of men with low vulnerability.Conclusions: Social vulnerability is reproducibly related to individual frailty/fitness, but distinct from it.Greater social vulnerability is associated with mortality in older adults.Further study on the measurement and operationalization of social vulnerability, and of its relationships to other important health outcomes, is warranted.
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Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.000 |
| Meta-epidemiology (narrow) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.002 | 0.004 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it