Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/120002
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Type: Journal article
Title: Effect of life-course family income trajectories on periodontitis: birth cohort study
Author: Schuch, H.
Peres, K.
Demarco, F.
Horta, B.
Gigante, D.
Peres, M.
Do, L.
Citation: Journal of Clinical Periodontology, 2018; 45(4):394-403
Publisher: Wiley
Issue Date: 2018
ISSN: 0303-6979
1600-051X
Statement of
Responsibility: 
Helena S. Schuch, Karen G. Peres, Flavio F. Demarco, Bernardo L. Horta, Denise P. Gigante, Marco A. Peres, Loc G. Do
Abstract: Aims: To quantify the impact of life course income trajectories on periodontitis in adulthood. Materials and Methods: Data from the 1982 Pelotas Birth Cohort Study, Brazil, were used. Information on family income was collected at birth and ages 15, 19, 23 and 30 years. Group-based trajectory modelling was used to identify income trajectories. Periodontal measures were assessed through clinical examination at age 31. Log-Poisson regression models were used to estimate prevalence ratios (PRs) of any and moderate/severe periodontitis, as outcomes. Results: Prevalence of any periodontitis and moderate/severe periodontitis was 37.3% and 14.3% (n = 539). Income trajectories were associated with prevalence of moderate/severe periodontitis. Adjusted PR in participants in low and variable income trajectory was 2.1 times higher than in participants in stable high-income trajectory. The unadjusted association between income trajectories and prevalence of any periodontitis was explained by the inclusion of behavioural and clinical variables in the model. Conclusions: Low and variable life course income increased the prevalence of moderate/severe periodontitis at age 31 years. The findings may inform programmes in identifying and targeting potentially at-risk groups during the life course to prevent periodontitis.
Keywords: Cohort studies; disparities; health status; periodontal disease; social mobility; socioeconomic factors
Rights: © 2017 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd
RMID: 0030078630
DOI: 10.1111/jcpe.12845
Appears in Collections:Dentistry publications

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