Projected socioeconomic disparities in the prevalence of obesity among Australian adults

Backholer, Kathryn, Mannan, Haider R., Magliano, Dianna J., Walls, Helen L., Stevenson, Chris, Beauchamp, Alison, Shaw, Jonathan E., and Peeters, Anna (2012) Projected socioeconomic disparities in the prevalence of obesity among Australian adults. Australian and New Zealand Journal of Public Health, 36 (6). pp. 557-563.

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Abstract

Objective: To project prevalence of normal weight, overweight and obesity by educational attainment, assuming a continuation of the observed individual weight change in the 5-year follow-up of the national population survey, the Australian Diabetes, Obesity and Lifestyle study (AusDiab; 2000–2005).

Methods: Age-specific transition probabilities between BMI categories, estimated using logistic regression, were entered into education-level-specific, incidence-based, multi-state life tables. Assuming a continuation of the weight change observed in AusDiab, these life tables estimate the prevalence of normal weight, overweight and obesity for Australian adults with low (secondary), medium (diploma) and high (degree) levels of education between 2005 and 2025.

Results: The prevalence of obesity among individuals with secondary level educational attainment is estimated to increase from 23% in 2000 to 44% in 2025. Among individuals with a degree qualification or higher, it will increase from 14% to 30%. If all current educational inequalities in weight change could be eliminated, the projected difference in the prevalence of obesity by 2025 between the highest and lowest educated categories would only be reduced by half (to a 6 percentage point difference from 14 percentage points).

Conclusion: We predict that almost half of Australian adults with low educational status will be obese by 2025. Current trends in obesity have the potential to drive an increase in the absolute difference in obesity prevalence between educational categories in future years.

Implications: Unless obesity prevention and management strategies focus specifically on narrowing social inequalities in obesity, inequalities in health are likely to widen.

Item ID: 35532
Item Type: Article (Refereed Research - C1)
Keywords: obesity; education; socio-economic status; projection; trend
ISSN: 1753-6405
Funders: National Health and Medical Research Council (NHMRC), Australian Research Council (ARC), VicHealth
Projects and Grants: NHMRC grant no. 465130, ARC Linkage grant LP1201004
Date Deposited: 16 Oct 2014 23:31
FoR Codes: 11 MEDICAL AND HEALTH SCIENCES > 1117 Public Health and Health Services > 111706 Epidemiology @ 40%
01 MATHEMATICAL SCIENCES > 0104 Statistics > 010402 Biostatistics @ 30%
14 ECONOMICS > 1403 Econometrics > 140304 Panel Data Analysis @ 30%
SEO Codes: 92 HEALTH > 9204 Public Health (excl. Specific Population Health) > 920499 Public Health (excl. Specific Population Health) not elsewhere classified @ 100%
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