TY - JOUR
T1 - Trajectories of health-related quality of life by socio-economic status in a nationally representative Canadian cohort
AU - Ross, Nancy A.
AU - Garner, Rochelle
AU - Bernier, David
AU - Feeny, H.
AU - Kaplan, Mark S.
AU - McFarland, Bentson
AU - Orpana, Heather M.
AU - Oderkirk, Jillian
PY - 2012/7
Y1 - 2012/7
N2 - Background Mortality and morbidity have been shown to follow a 'social gradient' in Canada and many other countries around the world. Comparatively little, however, is known about whether ageing amplifies, diminishes or sustains socio-economic inequalities in health. Methods Growth curve analysis of seven cycles of the Canadian National Population Health Survey (n1/413 682) for adults aged 20 and older at baseline (1994/95). The outcome of interest is the Health Utilities Index Mark 3, a measure of health-related quality of life (HRQL). Models include the deceased so as not to present overly optimistic HRQL values. Socio-economic position is measured separately by household-size-adjusted income and highest level of education attained. Results HRQL is consistently highest for the most affluent and the most highly educated men and women, and is lower, in turn, for middle and lower income and education groups. HRQL declines with age for both men and women. The rate of the decline in HRQL, however, was related neither to income nor to education for men, suggesting stability in the social gradient in HRQL over time for men. There was a sharper decline in HRQL for upper-middle and highest-income groups for women than for the poorest women. Conclusion HRQL is graded by both income and education in Canadian men and women. The grading of HRQL by social position appears to be 'set' in early adulthood and is stable through mid- and later life.
AB - Background Mortality and morbidity have been shown to follow a 'social gradient' in Canada and many other countries around the world. Comparatively little, however, is known about whether ageing amplifies, diminishes or sustains socio-economic inequalities in health. Methods Growth curve analysis of seven cycles of the Canadian National Population Health Survey (n1/413 682) for adults aged 20 and older at baseline (1994/95). The outcome of interest is the Health Utilities Index Mark 3, a measure of health-related quality of life (HRQL). Models include the deceased so as not to present overly optimistic HRQL values. Socio-economic position is measured separately by household-size-adjusted income and highest level of education attained. Results HRQL is consistently highest for the most affluent and the most highly educated men and women, and is lower, in turn, for middle and lower income and education groups. HRQL declines with age for both men and women. The rate of the decline in HRQL, however, was related neither to income nor to education for men, suggesting stability in the social gradient in HRQL over time for men. There was a sharper decline in HRQL for upper-middle and highest-income groups for women than for the poorest women. Conclusion HRQL is graded by both income and education in Canadian men and women. The grading of HRQL by social position appears to be 'set' in early adulthood and is stable through mid- and later life.
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U2 - 10.1136/jech.2010.115378
DO - 10.1136/jech.2010.115378
M3 - Article
C2 - 21441176
AN - SCOPUS:84864006184
SN - 0143-005X
VL - 66
SP - 593
EP - 598
JO - Journal of Epidemiology and Community Health
JF - Journal of Epidemiology and Community Health
IS - 7
ER -