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Long-term trends in the body mass index and obesity risk in Estonia: an age–period–cohort approach

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International Journal of Public Health

Abstract

Objectives

To analyse the age, period and cohort effects on the mean body mass index (BMI) and obesity over the past two decades in Estonia.

Methods

Study used data from nationally representative repeated cross-sectional surveys on 11,547 men and 16,298 women from 1996 to 2018. The independent effects of age, period and cohort on predicted mean BMI and probability of obesity (BMI ≥ 30 kg/m2) were modelled using hierarchical age–period–cohort analysis.

Results

Curvilinear association between age and mean BMI was found for men, whereas the increase in mean BMI was almost linear for women. The predicted mean BMI for 40-year-old men had increased by 6% and probability of obesity by 1.8 times over 1996–2018; the period effects were slightly smaller for women. Men from the 1970s birth cohort had higher mean BMI compared to the average, whereas no significant cohort effects were found for obesity outcome.

Conclusions

Population-level BMI changes in Estonia during 1996–2018 were mostly driven by period rather than cohort-specific changes.

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Funding

No specific funding was received for this study.

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Correspondence to Rainer Reile.

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The authors have no conflict of interest to declare.

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Reile, R., Baburin, A., Veideman, T. et al. Long-term trends in the body mass index and obesity risk in Estonia: an age–period–cohort approach. Int J Public Health 65, 859–869 (2020). https://doi.org/10.1007/s00038-020-01447-7

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  • DOI: https://doi.org/10.1007/s00038-020-01447-7

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