eISSN: 1896-9151
ISSN: 1734-1922
Archives of Medical Science
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Clinical research
New social adaptability index predicts overall mortality

Alexander Goldfarb-Rumyantzev, Anna Barenbaum, James Rodrigue, Preeti Rout, Ross Isaacs, Kenneth Mukamal

Arch Med Sci 2011; 7, 4: 720-727
Introduction : Definitions of underprivileged status based on race, gender and geographic location are neither sensitive nor specific; instead we proposed and validated a composite index of social adaptability (SAI).

Material and methods : Index of social adaptability was calculated based on employment, education, income, marital status, and substance abuse, each factor contributing from 0 to 3 points. Index of social adaptability was validated in NHANES-3 by association with all-cause and cause-specific mortality.

Results : Weighted analysis of 19,593 subjects demonstrated mean SAI of 8.29 (95% CI 8.17-8.40). Index of social adaptability was higher in Whites, followed by Mexican-Americans and then the African-American population (ANOVA, p < 0.001). The SAI was higher in subjects living in metropolitan compared to rural areas (T-test, p < 0.001), and was greater in men than in women (T-test, p < 0.001). In Cox models adjusted for age, comorbidity index, BMI, race, sex, geographic location, hemoglobin, serum creatinine, albumin, cholesterol, and glycated hemoglobin levels, SAI was inversely associated with mortality (HR 0.87 per point, 95% CI 0.84-0.90, p < 0.001). This association was confirmed in subgroups.

Conclusions : We proposed and validated an indicator of social adaptability with a strong association with mortality, which can be used to identify underprivileged populations at risk of death.

outcome, survival, social adaptability, disadvantaged population, disparity, underprivileged

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