Open Access 01-12-2015 | Research
The effect of subjective and objective social class on health-related quality of life: new paradigm using longitudinal analysis
Published in: Health and Quality of Life Outcomes | Issue 1/2015
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Background
To investigate the impact of the gap between subjective and objective social status on health-related quality of life.
Methods
We analyzed data from 12,350 participants aged ≥18 years in the Korean Health Panel Survey. Health-related quality of life was measured by EuroQol-Visual analogue scale. Objective (income and education) and subjective social class (measured by MacArthur scale) was classified into three groups (High, Middle, Low). In terms of a gap between objective and subjective social class, social class was grouped into nine categories ranging from High–High to Low–Low. A linear mixed model was used to investigate the association between the combined social class and health-related quality of life.
Results
The impact of the gap between objective and subjective status on Health-related quality of life varied according to the type of gap. Namely, at any given subjective social class, an individual’s quality of life declined with a decrease in the objective social class. At any given objective social class (e.g., HH, HM, HL; in terms of both education and income), an individual’s quality of life declined with a one-level decrease in subjective social class.
Conclusion
Our results suggest that studies of the relationship between social class and health outcomes may consider the multidimensional nature of social status.