9 results on '"Martins LFL"'
Search Results
2. Multilevel analysis of social determinants of advanced stage colorectal cancer diagnosis.
- Author
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Dantas AAG, de Oliveira NPD, Costa GAB, Martins LFL, Dos Santos JEM, Migowski A, de Camargo Cancela M, and de Souza DLB
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- Humans, Male, Female, Middle Aged, Aged, Adult, Brazil epidemiology, Aged, 80 and over, Cross-Sectional Studies, Adolescent, Young Adult, Socioeconomic Factors, Prevalence, Registries, Colorectal Neoplasms diagnosis, Colorectal Neoplasms epidemiology, Colorectal Neoplasms pathology, Social Determinants of Health, Neoplasm Staging, Multilevel Analysis
- Abstract
The advanced stage at diagnosis of colorectal cancer (CRC) may be related to individual factors, socioeconomic conditions, and healthcare service availability. The objective of the study was to analyze the prevalence of advanced stage CRC at the time of diagnosis and its association with individual, contextual, socioeconomic, and healthcare service indicators. An observational, cross-sectional study was conducted, analyzing cases of malignant neoplasms of the colon and rectum in individuals of both sexes, aged between 18 and 99 years, diagnosed between 2010 and 2019 in Brazil (n = 69,047). Data were collected from the Hospital Cancer Registry (HCR), Atlas of Human Development in Brazil, and from the National Registry of Health Institutions (NRHI). A Multilevel Poisson Regression model with random intercept was used. The prevalence of advanced stage CRC at diagnosis was 65.6%. Advanced stage was associated with older age groups prevalence ratio (PR) 4.40 and younger age groups (PR 1.84), low Human Development Index (HDI) (PR 1.22), and low density of family health strategy teams (PR 1.10). The study highlights the unequal distribution of social determinants of health in the diagnosis CRC in Brazil, revealing the need to evaluate and redirect public policies aimed at improving early detection and prevention of CRC in the country., (© 2024. The Author(s).)
- Published
- 2024
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3. What does Google Trends reveal about the proportion of waterpipe users in the Brazilian population?
- Author
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Lima FLT, Martins LFL, and Szklo AS
- Subjects
- Adult, Young Adult, Brazil epidemiology, Humans, Adolescent, Health Surveys, South American People, Search Engine, Water Pipe Smoking
- Abstract
Objective: To analyze the relationship between internet search volume and the prevalence of waterpipe use among young Brazilians in 2019., Methods: This was a descriptive study with data from Brazil in 2019, using the relative search volume on waterpipes extracted from Google Trends and the proportion of waterpipe users aged between 15 and 24 years, as measured by the National Health Survey (Pesquisa Nacional de Saúde - PNS), and aged between 13 and 17 years, as measured by the National Adolescent School-based Health Survey (Pesquisa Nacional de Saúde do Escolar - PeNSE). The relationship was assessed by means of Spearman's correlation., Results: The point prevalence of waterpipe use across the Brazilian Federative Units (FUs) showed a moderate (r = 0.51; PNS) to strong correlation (r = 0.74 and r = 0.80; PeNSE) with the relative search volume (p-value < 0.05)., Conclusion: Google Trends can support the monitoring system on waterpipe use in the FUs, providing additional information to existing population-based surveys., Main Results: The search volume for waterpipes by states in Brazil, as measured by Google Trends, showed a moderate to high correlation with the respective proportions of current use and experimentation of waterpipe among the adolescent/young adult population., Implications for Services: The use of Google Trends as a support to the monitoring system for waterpipe consumption in Brazil warrants further exploration in terms of the validity of additional information to existing population surveys., Perspectives: Expanding the use of Google Trends searches to assess its potential in monitoring other health risk products and detecting (or predicting) incidence or seasonality of health-related events.
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- 2023
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4. Cost-Effectiveness Analysis of Monoclonal Antibodies Associated With Chemotherapy in First-Line Treatment of Metastatic Colorectal Cancer.
- Author
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Barufaldi LA, de Albuquerque RCR, do Nascimento A, Martins LFL, Zimmermann IR, and de Souza MC
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- Humans, Panitumumab therapeutic use, Bevacizumab therapeutic use, Cost-Effectiveness Analysis, Cost-Benefit Analysis, Antibodies, Monoclonal therapeutic use, Colorectal Neoplasms drug therapy
- Abstract
Objectives: This study aimed to evaluate the cost-effectiveness of anti-epidermal growth factor receptor (cetuximab and panitumumab) or anti-vascular endothelial growth factor (bevacizumab) monoclonal antibodies associated with conventional chemotherapy (CT) (fluorouracil and leucovorin with irinotecan) as a first-line treatment for unresectable metastatic colorectal cancer., Methods: A partitioned survival analysis model was adopted to simulate direct health costs and benefits comparing therapeutic options in a 10 years' time horizon. Model data were extracted from the literature and costs were obtained from Brazilian official government databases. The analysis considered the perspective of the Brazilian Public Health System; costs were measured in local currency (BRL) and benefits in quality-adjusted life-years (QALY). A 5% discount rate was applied to costs and benefits. Alternative willingness-to-pay scenarios, varying from 3 to 5 times the cost-effectiveness threshold established in Brazil, were estimated. The results were presented incremental cost-effectiveness ratio (ICER), and both deterministic and probabilistic sensitivity analyses were performed., Results: The most cost-effective choice would be the association of CT with panitumumab, with an ICER of $58 330.15/QALY compared with isolated CT. The second-best option was CT with bevacizumab and panitumumab, with an ICER of $71 195.40/QALY compared with panitumumab alone. Although having higher costs, the second-best option was the most effective. Both strategies were cost-effective in part of the Monte Carlo iterations, considering the 3× threshold., Conclusions: The therapeutic option CT + panitumumab + bevacizumab represents the most significant effectiveness gain in our study. It is the second-lowest cost-effectiveness, and this option includes monoclonal antibodies association for patients with and without KRAS mutation., (Copyright © 2023 International Society for Health Economics and Outcomes Research. Published by Elsevier Inc. All rights reserved.)
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- 2023
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5. Human Papillomavirus 16 Lineage D is Associated with High Risk of Cervical Cancer in the Brazilian Northeast Region.
- Author
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Martins LFL, Moreira MÂM, Pinto RA, Reis NBD, Felix SP, Vidal JPCB, Torres LC, Souza AI, and Almeida LM
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- Humans, Female, Brazil epidemiology, Human Papillomavirus Viruses, Cross-Sectional Studies, Human papillomavirus 16 genetics, Papillomaviridae, Uterine Cervical Neoplasms epidemiology, Papillomavirus Infections complications, Papillomavirus Infections epidemiology
- Abstract
Objective: Similar to Human Papillomavirus (HPV) genotypes, different lineages of a genotype also have different carcinogenic capabilities. Studies have shown that specific genotype lineages of oncogenic HPV are associated with variable risks for the development of cervical intraepithelial neoplasia (CIN2/CIN3) and cervical cancer. The present study aimed to analyze the genetic diversity of the HPV16 genotype in women with CIN2/CIN3 and cervical cancer, from the northeast region of Brazil., Methods: A cross-sectional multicenter study was conducted in the northeast region of Brazil, from 2014 to 2016. This study included 196 cases of HPV16 variants (59 and 137 cases of CIN2/CIN3 and cervical cancer, respectively). The difference of proportion test was used to compare patients with CIN2/CIN3 and cervical cancer, based on the prevalent HPV16 lineage ( p < 0.05)., Results: According to the histopathological diagnosis, the percentage of lineage frequencies revealed a marginal difference in the prevalence of lineage A in CIN2/CIN3, compared with that in cervical cancer ( p = 0.053). For lineage D, the proportion was higher in cancer cases (32.8%), than in CIN2/CIN3 cases (16.9%), with p = 0.023., Conclusion: HPV16 lineage A was the most frequent lineage in both CIN2/CIN3 and cervical cancer samples, while lineage D was predominant in cervical cancer, suggesting a possible association between HPV16 lineage D and cervical cancer., Competing Interests: The authors have no conflict of interest to declare., (Federação Brasileira de Ginecologia e Obstetrícia. This is an open access article published by Thieme under the terms of the Creative Commons Attribution License, permitting unrestricted use, distribution, and reproduction so long as the original work is properly cited. (https://creativecommons.org/licenses/by/4.0/).)
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- 2023
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6. Contributions of the analysis of discarded cigarette packages in household waste in the Brazilian city of Rio de Janeiro, Brazil, to estimate the illegal market.
- Author
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Machado AT, Iglesias RM, Mendes FL, Martins LFL, Teixeira APL, Cavalcante TM, Conde ALFM, Cordeiro SO, Cardoso ARR, Almeida LM, and Szklo AS
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- Brazil epidemiology, Commerce, Humans, Taxes, Tobacco Industry, Tobacco Products
- Abstract
The illicit trade of tobacco products, by enabling access to cheaper cigarettes, favors smoking initiation and hinders its cessation, minimizing the effects of price policy and taxes on reducing the demand for tobacco. This is especially the case among populations with lower income and schooling, where smoking is concentrated. Its confrontation requires multisectoral actions, aligned with the World Health Organization Framework Convention on Tobacco Control, supported by estimates of the illicit trade magnitude and the analysis of its characteristics. This study analyzes, based on samples of household solid waste collected in 2018 in the city of Rio de Janeiro, Brazil, the conformity of discarded cigarette packages with criteria for their regular commercialization in Brazil, classifying them as legal or illegal. The evaluation was also carried out for the 15 Planning Areas (PA) of the municipality. The Social Progress Index (SPI) was chosen to represent heterogeneities among PA. The average percentage of illegal cigarette packs found was 26.79%, ranging from 3.36% to 46.29% among PA. The PAs with high illegality presented lower Social Progress Index and lower percentages of legal cigarette packages with a price equal to or greater than BRL 7.25. Among the illegal packages, 98.07% were manufactured in Paraguay. The study contributes methodologically to measure the consumption of illegal cigarettes in the second economic capital of Brazil, supporting the National Tobacco Control Policy in the struggle against illicit trade of tobacco products and in the effective implementation of the pricing and tax policy on these products.
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- 2021
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7. Spatial distribution of advanced stage diagnosis and mortality of breast cancer: Socioeconomic and health service offer inequalities in Brazil.
- Author
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Oliveira NPD, Cancela MC, Martins LFL, and de Souza DLB
- Subjects
- Adolescent, Adult, Aged, Aged, 80 and over, Brazil epidemiology, Breast Neoplasms mortality, Breast Neoplasms pathology, Female, Humans, Middle Aged, Neoplasm Staging, Registries, Socioeconomic Factors, Spatial Analysis, Young Adult, Breast Neoplasms diagnosis, Delayed Diagnosis statistics & numerical data, Healthcare Disparities statistics & numerical data
- Abstract
Breast cancer presents high incidence and mortality rates, being considered an important public health issue. Analyze the spatial distribution pattern of late stage diagnosis and mortality for breast cancer and its correlation with socioeconomic and health service offer-related population indicators. Ecological study, developed with 161 Intermediate Region of Urban Articulation (IRUA). Mortality data were collected from the Mortality Information System (MIS). Tumor staging data were extracted from the Hospital Cancer Registry (HCR). Socioeconomic variables were obtained from the Atlas of Human Development in Brazil; data on medical density and health services were collected from the National Registry of Health Institutions (NRHI) and Supplementary National Health Agency. Global Moran's Index and Local Indicator of Spatial Association (LISA) were utilized to verify the existence of territorial clusters. Multivariate analysis used models with global spatial effects. The proportion of late stage diagnosis of breast cancer was 39.7% (IC 39.4-40.0). The mean mortality rate for breast cancer, adjusted by the standard world population was 10.65 per 100,000 women (± 3.12). The proportion of late stage diagnosis presented positive spatial correlation with Gini's Index (p = 0.001) and negative with the density of gynecologist doctors (p = 0.009). The adjusted mortality rates presented a positive spatial correlation with the Human Development Index (p<0.001) and density of gynecologist doctors (p<0.001). Socioeconomic and health service offer-related inequalities of the Brazilian territory are determinants of the spatial pattern of breast cancer morbimortality in Brazil., Competing Interests: The authors have declared that no competing interests exist.
- Published
- 2021
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8. A multilevel assessment of the social determinants associated with the late stage diagnosis of breast cancer.
- Author
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de Oliveira NPD, de Camargo Cancela M, Martins LFL, and de Souza DLB
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- Adolescent, Adult, Age Factors, Aged, Aged, 80 and over, Brazil epidemiology, Breast Neoplasms epidemiology, Breast Neoplasms pathology, Cross-Sectional Studies, Delayed Diagnosis, Educational Status, Female, Humans, Middle Aged, Neoplasm Staging, Prevalence, Risk Factors, Social Determinants of Health, Socioeconomic Factors, Young Adult, Breast Neoplasms diagnosis
- Abstract
The advanced-stage diagnosis of breast cancer reveals the inequalities associated with socioeconomic conditions and the offer of health services. This study analyzes the prevalence of advanced breast cancer and its relationship with individual and contextual socioeconomic indicators and offer of health service. A cross-sectional study is presented herein, on the assessment of malignant breast neoplasms in women diagnosed between 2006 and 2015 (n = 195,201). Data were collected from the Hospital Cancer Registry (HCR), Atlas of Human Development in Brazil, and from the National Registry of Health Institutions (NRHI). A multilevel Poisson Regression was carried out with random intercept. The prevalence of advanced breast cancer diagnosis was 40.0%. Advanced staging was associated with younger age groups (PR 1.41), race/nonwhite (PR 1.13), lower education levels (PR 1.38), and public access to health services (PR 1.25). There was also an association with a low density of mammographic equipment (PR 1.08), and with low indices of local social inequality (PR 1.33) and human development (PR 0.80). This study maps and highlights the causes related to inequalities in the diagnosis of advanced breast cancer in Brazil, and presents essential data to reorient public policies and health-related actions to strengthen the control of breast cancer in Brazil.
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- 2021
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9. Human Papillomavirus Genotype Distribution among Cervical Cancer Patients prior to Brazilian National HPV Immunization Program.
- Author
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de Almeida LM, Martins LFL, Pontes VB, Corrêa FM, Montenegro RC, Pinto LC, Soares BM, Vidal JPCB, Félix SP, Bertoni N, Szklo M, and Moreira MAM
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- Adolescent, Adult, Aged, Brazil epidemiology, Female, Genotype, Humans, Immunization Programs statistics & numerical data, Middle Aged, Papillomavirus Infections epidemiology, Prevalence, Reference Values, Socioeconomic Factors, Uterine Cervical Neoplasms epidemiology, Young Adult, Papillomaviridae genetics, Papillomavirus Infections virology, Uterine Cervical Neoplasms virology
- Abstract
To evaluate the impact of HPV immunization and possible changes in virus type-specific prevalence associated with cervical cancer, it is important to obtain baseline information based on socioeconomic, educational, and environmental characteristics in human populations. We describe these characteristics and the type-specific HPV distribution in 1,183 women diagnosed with cervical cancer in two Brazilian healthcare institutions located at the Southeastern (Rio de Janeiro/RJ) and the Amazonian (Belém/PA) regions. Large differences were observed between women in these regions regarding economic, educational, and reproductive characteristics. The eight most frequent HPV types found in tumor samples were the following: 16, 18, 31, 33, 35, 45, 52, and 58. Some HPV types classified as unknown or low risk were found in tumor samples with single infections, HPV 83 in RJ and HPV 11, 61, and 69 in PA. The proportion of squamous cervical cancer was lower in RJ than in PA (76.3% versus 87.3%, p < 0.001). Adenocarcinoma was more frequent in RJ than in PA (13.5% versus 6.9%, p < 0.001). The frequency of HPV 16 in PA was higher in younger women ( p < 0.05). The success of a cervical cancer control program should consider HPV types, local health system organization, and sociodemographic diversity of Brazilian regions.
- Published
- 2017
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