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116,719 Works

Stock return predictability: A factor-augmented predictive regression system with shrinkage method

Saburo Ohno & Tomohiro Ando
To predict stock market behaviors, we use a factor-augmented predictive regression with shrinkage to incorporate the information available across literally thousands of financial and economic variables. The system is constructed in terms of both expected returns and the tails of the return distribution. We develop the variable selection consistency and asymptotic normality of the estimator. To select the regularization parameter, we employ the prediction error, with the aim of predicting the behavior of the stock...

Inequalities in health: living conditions and infant mortality in Northeastern Brazil

Renata Alves Da Silva Carvalho, Victor Santana Santos, Cláudia Moura De Melo, Ricardo Queiroz Gurgel & Cristiane Costa Da Cunha Oliveira
OBJECTIVE To analyze the variation of infant mortality as per condition of life in the urban setting.METHODS Ecological study performed with data regarding registered deaths of children under the age of one who resided in Aracaju, SE, Northeastern Brazil, from 2001 to 2010. Infant mortality inequalities were assessed based on the spatial distribution of the Living Conditions Index for each neighborhood, classified into four strata. The average mortality rates of 2001-2005 and 2006-2010 were compared...

Factors associated with smoking cessation

Samires Avelino De Souza França, Ana Ligian Feitosa Das Neves, Tatiane Andressa Santos De Souza, Nandara Celana Negreiros Martins, Saul Rassy Carneiro, Edilene Do Socorro Nascimento Falcão Sarges & Maria De Fátima Amine Houat De Souza
OBJECTIVE To analyze the prevalence and factors associated with smoking abstinence among patients who were treated in a reference unit for smoking cessation.METHODS This cross-sectional study examined the medical records of 532 patients treated in a reference unit for smoking cessation in Belém, PA, Northern Brazil, between January 2010 and June 2012. Sociodemographic variables and those related to smoking history and treatment were analyzed. Statistical significance was set at p < 0.05.RESULTS The mean age...

HIV testing and clinical status upon admission to a specialized health care unit in Pará, Brazil

Paulo Afonso Martins Abati & Aluisio Cotrim Segurado
OBJECTIVE To analyze the clinical and laboratory characteristics of HIV-infected individuals upon admission to a reference health care center.METHODS This cross-sectional study was conducted between 1999 and 2010 on 527 individuals with confirmed serological diagnosis of HIV infection who were enrolled in an outpatient health care service in Santarém, PA, Northern Brazil. Data were collected from medical records and included the reason for HIV testing, clinical status, and count of peripheral CD4+ T lymphocytes upon...

Access to continued-use medication among older adults, Brazil

Karynna Pimentel Viana, Alexandre Dos Santos Brito, Claudia Soares Rodrigues & Ronir Raggio Luiz
OBJECTIVE To determine the prevalence and associated access factors for all continued-use prescription drugs and the ways in which they can be obtained.METHODS Data was obtained from the 2008 Household National Survey. The sample comprised 27,333 individuals above 60 years who reported that they used continued-use prescription drugs. A descriptive analysis and binary and multiple multinomial logistic regressions were performed.RESULTS 86.0% of the older adults had access to all the medication they needed, and among...

Violence against metropolitan bus drivers and fare collectors in Brazil

Ada Ávila Assunção & Adriane Mesquita De Medeiros
OBJECTIVE To analyze the correlation between sociodemographic factors and working conditions of bus workers in a metropolitan area and violence against them.METHODS This cross-sectional study used a nonprobabilistic sample estimated according to the number of workers employed in bus companies located in three cities in the Belo Horizonte metropolitan region in 2012 (N = 17,470). Face-to-face interviews were conducted using a digital questionnaire. The factors associated with violence were analyzed in two stages using Poisson...

Economic analysis of surgical treatment of hip fracture in older adults

Fabiano Bolpato Loures, Alfredo Chaoubah, Valdeci Manoel De Oliveira, Alessandra Maciel Almeida, Estela Márcia De Saraiva Campos & Elenir Pereira De Paiva
OBJECTIVE To analyze the incremental cost-utility ratio for the surgical treatment of hip fracture in older patients.METHODS This was a retrospective cohort study of a systematic sample of patients who underwent surgery for hip fracture at a central hospital of a macro-region in the state of Minas Gerais, Southeastern Brazil between January 1, 2009 and December 31, 2011. A decision tree creation was analyzed considering the direct medical costs. The study followed the healthcare provider’s...

Profile and follow-up of patients with tuberculosis in a priority city in Brazil

Jisleny Da Cruz Pereira, Marcio Roberto Silva, Ronaldo Rodrigues Da Costa, Mark Drew Crosland Guimarães & Isabel Cristina Gonçalves Leite
OBJECTIVE To analyze the cases of tuberculosis and the impact of direct follow-up on the assessment of treatment outcomes.METHODS This open prospective cohort study evaluated 504 cases of tuberculosis reported in the Sistema de Informação de Agravos de Notificação (SINAN – Notifiable Diseases Information System) in Juiz de Fora, MG, Southeastern Brazil, between 2008 and 2009. The incidence of treatment outcomes was compared between a group of patients diagnosed with tuberculosis and directly followed up...

Intimate partner violence after the diagnosis of sexually transmitted diseases

Roumayne Fernandes Vieira Andrade, Maria Alix Leite Araújo, Luiza Jane Eyre De Souza Vieira, Cláudia Bastos Silveira Reis & Angélica Espinosa Miranda
OBJECTIVE To assess the prevalence and factors associated with intimate partner violence after the diagnosis of sexually transmitted diseases.METHODS This cross-sectional study was conducted in Fortaleza, CE, Northeastern Brazil, in 2012 and involved 221 individuals (40.3% male and 59.7% female) attended to at reference health care units for the treatment of sexually transmitted diseases. Data were collected using a questionnaire applied during interviews with each participant. A multivariate analysis with a logistic regression model was...

Cyclosporine versus tacrolimus: cost-effectiveness analysis for renal transplantation in Brazil

Augusto Afonso Guerra Júnior, Grazielle Dias Silva, Eli Iola Gurgel Andrade, Mariângela Leal Cherchiglia, Juliana De Oliveira Costa, Alessandra Maciel Almeida & Francisco De Assis Acurcio
OBJECTIVE To analyze the cost-effectiveness of treatment regimens with cyclosporine or tacrolimus, five years after renal transplantation.METHODS This cost-effectiveness analysis was based on historical cohort data obtained between 2000 and 2004 and involved 2,022 patients treated with cyclosporine or tacrolimus, matched 1:1 for gender, age, and type and year of transplantation. Graft survival and the direct costs of medical care obtained from the National Health System (SUS) databases were used as outcome results.RESULTS Most of...

Factors associated with the nutritional status of children less than 5 years of age

Teresa Cristina Miglioli, Vania Matos Fonseca, Saint Clair Gomes Junior, Katia Silveira Da Silva, Pedro Israel Cabral De Lira & Malaquias Batista Filho
OBJECTIVE To analyze if the nutritional status of children aged less than five years is related to the biological conditions of their mothers, environmental and socioeconomic factors, and access to health services and social programs.METHODS This cross-sectional population-based study analyzed 664 mothers and 790 children using canonical correlation analysis. Dependent variables were characteristics of the children (weight/age, height/age, BMI/age, hemoglobin, and retinol serum levels). Independent variables were those related to the mothers’ nutritional status (BMI,...

Occupational conditions and the risk of the use of amphetamines by truck drivers

Lúcio Garcia De Oliveira, Letícia Maria De Araújo De Souza, Lúcia Pereira Barroso, Marcela Júlio César Gouvêa, Carlos Vinícius Dias De Almeida, Daniel Romero Muñoz & Vilma Leyton
OBJECTIVE To test whether the occupational conditions of professional truck drivers are associated with amphetamine use after demographic characteristics and ones regarding mental health and drug use are controlled for.METHODS Cross-sectional study, with a non-probabilistic sample of 684 male truck drivers, which was collected in three highways in Sao Paulo between years 2012 and 2013. Demographic and occupational information was collected, as well as data on drug use and mental health (sleep quality, emotional stress,...

Dietary patterns in pregnancy and birth weight

Natália De Lima Pereira Coelho, Diana Barbosa Cunha, Ana Paula Pereira Esteves, Elisa Maria De Aquino Lacerda & Mariza Miranda Theme Filha
OBJECTIVE To analyze if dietary patterns during the third gestational trimester are associated with birth weight.METHODS Longitudinal study conducted in the cities of Petropolis and Queimados, Rio de Janeiro (RJ), Southeastern Brazil, between 2007 and 2008. We analyzed data from the first and second follow-up wave of a prospective cohort. Food consumption of 1,298 pregnant women was assessed using a semi-quantitative questionnaire about food frequency. Dietary patterns were obtained by exploratory factor analysis, using the...

Religiousness and health-related quality of life of older adults

Gina Andrade Abdala, Miako Kimura, Yeda Aparecida De Oliveira Duarte, Maria Lúcia Lebrão & Bernardo Dos Santos
OBJECTIVE To examine whether religiousness mediates the relationship between sociodemographic factors, multimorbidity and health-related quality of life of older adults. METHODS This population-based cross-sectional study is part of the Survey on Health, Well-Being, and Aging (SABE). The sample was composed by 911 older adults from Sao Paulo, SP, Southeastern Brazil. Structural equation modeling was performed to assess the mediator effect of religiousness on the relationship between selected variables and health-related quality of life of older...

Institutional and matrix support and its relationship with primary healthcare

Alaneir De Fátima Dos Santos, Antônio Thomaz Gonzaga Da Matta Machado, Clarice Magalhães Rodrigues Dos Reis, Daisy Maria Xavier Abreu, Lucas Henrique Lobato De Araújo, Simone Cristina Rodrigues, Ângela Maria De Lourdes Dayrell De Lima, Alzira De Oliveira Jorge & Délcio Fonseca Sobrinho
OBJECTIVE To analyze whether the level of institutional and matrix support is associated with better certification of primary healthcare teams.METHODS In this cross-sectional study, we evaluated two kinds of primary healthcare support – 14,489 teams received institutional support and 14,306 teams received matrix support. Logistic regression models were applied. In the institutional support model, the independent variable was “level of support” (as calculated by the sum of supporting activities for both modalities). In the matrix...

Body weight gain during adulthood and uterine myomas: Pró-Saúde Study

Karine De Lima Sírio Boclin, Fernanda Pelegrini Torres & Eduardo Faerstein
This study intended to investigate whether body weight gain during adulthood is associated with uterine myomas. 1,560 subjects were evaluated in a Pró-Saúde Study. Weight gain was evaluated in a continuous fashion and also in quintiles. Odds ratios and 95% confidence intervals were estimated through logistic regression models that were adjusted for education levels, color/race, body mass indices at age 20, age of menarche, parity, use of oral contraceptive methods, smoking, health insurance, and the...

The importance to update the guidelines for the use of genetic testing in noncancer patients in Brazil

Tirzah Braz Petta Lajus
The Brazilian National Regulatory Agency for Private Health Insurance and Plans has recently published a technical note defining the criteria for the coverage of genetic testing to diagnose hereditary cancer. In this study we show the case of a patient with a breast lesion and an extensive history of cancer referred to a private service of genetic counseling. The patient met both criteria for hereditary breast and colorectal cancer syndrome screening. Her private insurance denied...

Bullying among adolescents in a Brazilian urban center – “Health in Beagá” Study

Michelle Ralil Da Costa, César Coelho Xavier, Amanda Cristina De Souza Andrade, Fernando Augusto Proietti & Waleska Teixeira Caiaffa
OBJECTIVE To analyze the prevalence of bullying and its associated factors in Brazilian adolescents.METHODS Data were used from a population-based household survey conducted by the Urban Health Observatory (OSUBH) utilizing probability sampling in three stages: census tracts, residences, and individuals. The survey included 598 adolescents (14-17 years old) who responded questions on bullying, sociodemographic characteristics, health-risk behaviors, educational well-being, family structure, physical activity, markers of nutritional habits, and subjective well-being (body image, personal satisfaction, and...

Impact of ultra-processed foods on micronutrient content in the Brazilian diet

Maria Laura Da Costa Louzada, Ana Paula Bortoletto Martins, Daniela Silva Canella, Larissa Galastri Baraldi, Renata Bertazzi Levy, Rafael Moreira Claro, Jean-Claude Moubarac, Geoffrey Cannon & Carlos Augusto Monteiro
OBJECTIVE To evaluate the impact of consuming ultra-processed foods on the micronutrient content of the Brazilian population’s diet.METHODS This cross-sectional study was performed using data on individual food consumption from a module of the 2008-2009 Brazilian Household Budget Survey. A representative sample of the Brazilian population aged 10 years or over was assessed (n = 32,898). Food consumption data were collected through two 24-hour food records. Linear regression models were used to assess the association...

Users’ dissatisfaction with dental care: a population-based household study

Andréa Maria Eleutério De Barros Lima Martins, Raquel Conceição Ferreira, Pedro Eleutério Dos Santos Neto, Danilo Lima Carreiro, João Gabriel Silva Souza & Efigênia Ferreira E Ferreira
OBJECTIVE To examine whether demographic, socioeconomic conditions, oral health subjectivity and characterization of dental care are associated with users’ dissatisfaction with such are.METHODS Cross-sectional study of 781 people who required dental care in Montes Claros, MG, Southeastern Brazil, in 2012, a city with of medium-sized population situated in the North of Minas Gerais. Household interviews were conducted to assess the users’ dissatisfaction with dental care (dependent variable), demographic, socioeconomic conditions, oral health subjectivity and characterization...

Gender differences in the association between tooth loss and obesity among older adults in Brazil

Ankur Singh, Marco Aurélio Peres, Karen Glazer Peres, Carla De Oliveira Bernardo, Andre Xavier & Eleonora D’Orsi
OBJECTIVE To analyze if differences according to gender exists in the association between tooth loss and obesity among older adults.METHODS We analyzed data on 1,704 older adults (60 years and over) from the baseline of a prospective cohort study conducted in Florianopolis, SC, Southern Brazil. Multivariable logistic regression models were used to assess the association between tooth loss and general and central obesity after adjustment for confounders (age, gender, skin color, educational attainment, income, smoking,...

Socioeconomic inequalities and changes in oral health behaviors among Brazilian adolescents from 2009 to 2012

Maria Do Carmo Matias Freire, Lidia Moraes Ribeiro Jordão, Deborah Carvalho Malta, Silvânia Suely Caribé De Araújo Andrade & Marco Aurelio Peres
OBJECTIVE To analyze oral health behaviors changes over time in Brazilian adolescents concerning maternal educational inequalities.METHODS Data from the Pesquisa Nacional de Saúde do Escolar(Brazilian National School Health Survey) were analyzed. The sample was composed of 60,973 and 61,145 students from 26 Brazilian state capitals and the Federal District in 2009 and 2012, respectively. The analyzed factors were oral health behaviors (toothbrushing frequency, sweets consumption, soft drink consumption, and cigarette experimentation) and sociodemographics (age, sex,...

Spatial distribution and socioeconomic context of tuberculosis in Rio de Janeiro, Brazil

Alessandra Gonçalves Lisbôa Pereira, Roberto De Andrade Medronho, Claudia Caminha Escosteguy, Luis Iván Ortiz Valencia & Mônica De Avelar Figueiredo Mafra Magalhães
OBJECTIVE To analyze the spatial distribution of risk for tuberculosis and its socioeconomic determinants in the city of Rio de Janeiro, Brazil.METHODS An ecological study on the association between the mean incidence rate of tuberculosis from 2004 to 2006 and socioeconomic indicators of the Censo Demográfico (Demographic Census) of 2000. The unit of analysis was the home district registered in the Sistema de Informação de Agravos de Notificação (Notifiable Diseases Information System) of Rio de...

Validation of psychosocial scales for physical activity in university students

Rafael Miranda Tassitano, José Cazuza De Farias Júnior, Cassiano Ricardo Rech, Maria Cecília Marinho Tenório, Poliana Coelho Cabral & Giselia Alves Pontes Da Silva
OBJECTIVE Translate the Patient-centered Assessment and Counseling for Exercise questionnaire, adapt it cross-culturally and identify the psychometric properties of the psychosocial scales for physical activity in young university students.METHODS The Patient-centered Assessment and Counseling for Exercise questionnaire is made up of 39 items divided into constructs based on the social cognitive theory and the transtheoretical model. The analyzed constructs were, as follows: behavior change strategy (15 items), decision-making process (10), self-efficacy (6), support from family...

Incidence and risk factors for intimate partner violence during the postpartum period

Elisabete Pereira Silva, Sandra Valongueiro, Thália Velho Barreto De Araújo & Ana Bernarda Ludermir
OBJECTIVE To estimate the incidence and identify risk factors for intimate partner violence during postpartum.METHODS This prospective cohort study was conducted with women, aged between 18-49 years, enrolled in the Brazilian Family Health Strategy in Recife, Northeastern Brazil, between 2005 and 2006. Of the 1.057 women interviewed during pregnancy and postpartum, 539 women, who did not report violence before or during pregnancy, were evaluated. A theoretical-conceptual framework was built with three levels of factors hierarchically...

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