Publications by authors named "Thayana Calixto De Carvalho"
Background: to explore the age, period, and birth-cohort effects on stomach cancer incidence trends during 3 decades in selected Latin American countries.
Methods: a time-trend study was performed using Cancer Incidence in Five Continents data from high-quality population-based cancer registries(PBCRs) in Latin American countries. Crude and age-standardized incidence rates(ASRIs) were calculated.
This study aimed to assess time trends in colorectal cancer incidence from 1983 to 2012 in Latin America. This was an ecological time-series study whose population consisted of individuals aged 20 years or older diagnosed with colorectal cancer. Data from population-based cancer registries in Cali (Colombia), Costa Rica, Goiânia (Brazil), and Quito (Ecuador), were used for rates estimation, while time trends estimations were proceeded by the Joinpoint Regression Program.
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- The study aimed to analyze heavy metal levels in dairy products sold in São Luís, Brazil, focusing on metals like copper, lead, mercury, and nickel, as well as their antagonists including iron and zinc.
- Using a method called ICP-OES, the research found significant presence of mercury and lead in the samples, with notable negative correlations between copper and its antagonists iron and zinc in whole milk.
- Overall, the findings suggest that dairy products in this market may pose a risk of heavy metal contamination, although the relationships with their antagonistic minerals are generally weak.
Objective: To estimate Age-Period-Cohort effects on colorectal, colon and rectal cancer incidence rates in Latin American countries covered by high quality population-based cancer registries.
Methods: A trend study was performed using data from Cancer Incidence in Five Continents. Age-Period-Cohort effects were estimated by Poisson regression for individuals aged between 20 and 79 years with colorectal, colon and rectal cancers informed by Population-Based Cancer Registries from 1983 to 2012 in Cali (Colombia); from 1983 to 2007 in Costa Rica; and from 1988 to 2012 for both Goiânia (Brazil) and Quito (Ecuador).