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Int. J. Environ. Res. Public Health 2014, 11(8), 7608-7621; doi:10.3390/ijerph110807608

Trends in AIDS Incidence in Individuals Aged 50 Years or Older in the City of Rio de Janeiro, Brazil, 1982–2011: An Age-Period-Cohort Analysis

1
Pos-Graduate Program in Medical Sciences, Rio de Janeiro State University, Rio de Janeiro 20550-170, Brazil
2
National School of Public Health Sergio Arouca (ENSP), Oswaldo Cruz Foundation, Rio de Janeiro 21041-210, Brazil
3
Centre for Studies and Research on Ageing, Vital Brazil Institute, Rio de Janeiro 22451-000, Brazil
4
School of Medical Sciences, Rio de Janeiro State University, Rio de Janeiro 20550-170, Brazil
*
Author to whom correspondence should be addressed.
Received: 21 April 2014 / Revised: 30 June 2014 / Accepted: 1 July 2014 / Published: 29 July 2014
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Abstract

Objective: The aim of this study was to investigate the effects of three temporal components of AIDS incidence (i.e., age, period and cohort) on individuals aged 50 or older living in Niteroi, Rio de Janeiro (Brazil). Methods: Age-specific incidence rates were calculated from 1982–2011. Negative binomial and Poisson models were used to analyze the risk of AIDS by age, period and cohort. Results: The risk of AIDS in men was 2.45 times higher than in women, regardless of age and period (p-value < 0.001). The incidence of AIDS in individuals older than 69 years was 7-fold lower than in those aged 50–59 years (p-value < 0.001). A decreasing trend in AIDS risk was observed from the youngest cohort (≥1940) to the oldest (1910–1919). From 1982 to 2006, we could detect an increasing trend in AIDS risk in the population aged 50 years or older. A peak in rates was detected in the period from 2002–2006. The incidence rates in 2002–2006 were six times higher than those in 1987–1991 (p-value < 0.001), independent of age and sex (p-value < 0.001). Conclusions: An increase of AIDS risk in older people was detected. This group should not be neglected by public health programs. View Full-Text
Keywords: acquired immune deficiency syndrome; aging; age effect; period effect; sexually transmitted diseases; epidemiology acquired immune deficiency syndrome; aging; age effect; period effect; sexually transmitted diseases; epidemiology
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MDPI and ACS Style

Apratto Junior, P.C.; de Lima Barros, M.B.; Daumas, R.P.; de Noronha Andrade, M.K.; Monteiro, D.L.M.; Vincent, B.R.L.; Lino, V.T.S.; Rodrigues, N.C.P. Trends in AIDS Incidence in Individuals Aged 50 Years or Older in the City of Rio de Janeiro, Brazil, 1982–2011: An Age-Period-Cohort Analysis. Int. J. Environ. Res. Public Health 2014, 11, 7608-7621.

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Int. J. Environ. Res. Public Health EISSN 1660-4601 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
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