Framingham score adapted: a valid alternative for estimating cardiovascular risk in epidemiological studies.

Background: Framingham risk score (FRS) is an important cardiovascular risk assessment tool, based on objective measurements of blood pressure and lipid profile, among other factors. However, in large population surveys, these measures are not always available, which limits their use.

Objectives: Evaluate the performance of the FRS predictive results using subjective measures.

Food consumption patterns and Framingham cardiovascular risk score among shift workers: A Nova-based approach.

Objective: To evaluate the association between dietary quantity and variety, by extent and purpose of processing, and Framingham cardiovascular disease (CVD) risk score among rotating shift workers.

Methods: The cross-sectional study included male shift workers. Dietary intake was assessed using a 24-h recall method conducted by trained interviewers.

Temporal patterns of food consumption and their association with cardiovascular risk in rotating shift workers.

Objective: We aimed to evaluate the association of temporal patterns of food consumption with cardiovascular disease (CVD) risk.

Methods: This cross-sectional study included male rotating shift workers in an iron ore extraction company. Data on food consumption was collected using a 24 h recall, applied by trained interviewers.

Arterial hypertension in rotating shift workers: The role of hypertriglyceridemic waist and hypertriglyceridemic waist-to-height ratio phenotypes.

Objective: To examine the association of arterial hypertension and the hypertriglyceridemic waist phenotype (HWP) and hypertriglyceridemic waist-to-height phenotype (HWHP).

Methodology: This cross-sectional study was conducted with 1422 male rotating shift workers in Brazil. The HWP was defined as having a waist circumference ≥94 cm and serum triglycerides ≥150 mg/dL, whereas the HWHP was determined by having a waist-to-height ratio ≥0.

Rotating shift work time is directly associated with excess body adiposity.

Objective: To analyze the association between changes in body adiposity and length of service on a schedule of rotating shifts.

Methods: The study was a cross-sectional investigation conducted during the years 2012, 2015, and 2018, involving individuals engaged in rotating shifts at a company involved in iron ore extraction situated within the Iron Quadrangle region of Minas Gerais and the southeastern region of Pará, Brazil. Sociodemographic and behavioral data were collected along with anthropometric parameters in order to calculate body mass index (BMI) and the waist-to-height ratio (WHtR).

Vitamin D deficiency and hyperglycemia in male rotating shift workers: A disturbed circadian rhythms influence.

Background: Shift work is related to several negative impacts on the health of workers. This study aimed to evaluate the association between vitamin D deficiency (VDD) and hyperglycemia in shift workers.

Methodology: This cross-sectional study included male rotating shift workers in an iron ore extraction company.

Association of Hypovitaminosis D with Sleep Parameters in Rotating Shift Worker Drivers.

 To evaluate the association between sleep parameters and hypovitaminosis D in rotating shift drivers.  We conducted a cross-sectional study on 82 male rotating shift workers (24-57 years old) with at least one cardiovascular risk factor (such as hyperglycemia, dyslipidemia, abdominal obesity, physical inactivity, hypertension, and smoking). Polysomnography was used to evaluate sleep parameters.

Rotating shift workers with vitamin D deficiency have a higher risk of obstructive sleep apnea.

Objectives: The study aimed to evaluate the association between obstructive sleep apnea (OSA) and vitamin D deficiency (VDD) in shift workers.

Methods: This cross-sectional study included male rotating shift workers in an iron ore extraction company. Participants were classified as VDD when 25(OH)D < 20 ng/mL for a healthy population and 25(OH)D < 30 ng/mL for groups at risk for VDD.

Logistics Workers Are a Key Factor for SARS-CoV-2 Spread in Brazilian Small Towns: Case-Control Study.

Background: Data on how SARS-CoV-2 enters and spreads in a population are essential for guiding public policies.

Objective: This study seeks to understand the transmission dynamics of SARS-CoV-2 in small Brazilian towns during the early phase of the epidemic and to identify core groups that can serve as the initial source of infection as well as factors associated with a higher risk of COVID-19.

Methods: Two population-based seroprevalence studies, one household survey, and a case-control study were conducted in two small towns in southeastern Brazil between May and June 2020.

Body fat indicators for cardiometabolic risk screening among shift workers.

Background: In view of the costly methods currently available for the assessment of body adiposity, anthropometric obesity indicators have proven effective in predicting cardiovascular risk.

Objective: To investigate the discriminatory power of body fat indicators for cardiovascular risk screening among shift workers.

Methods: Cross-sectional study with male employees of an iron ore extraction company.

Effects of vitamin D supplementation on cardiovascular risk factors in shift workers: Study protocol for randomized, double-blind, placebo-controlled clinical trial.

Objective: The present clinical study aims to describe protocol to evaluate the effects of vitamin D3 supplementation on the cardiovascular risk factors in a population of rotating shift workers.

Design: A randomized, double-blind, placebo-controlled, parallel group clinical trial testing 2 oral dosages of cholecalciferol (14,000 IU and 28,000 IU per week) for 12 months.

Setting: The primary outcome for evaluation is an 18% reduction in hypertriglyceridemia (≥150 mg/dL) between pre and postintervention measurements.

Heart rate variability in shift workers: responses to orthostatism and relationships with anthropometry, body composition, and blood pressure.

In order to investigate the response of heart rate variability (HRV) components to postural change and their association with cardiovascular risk factors in shift workers, a cross-sectional study with 438 Brazilian males rotating shift workers was done. Anthropometric, body composition, and clinical measures were collected. Electrocardiogram was recorded for 3 minutes, in the supine and orthostatic position, and HRV components were extracted.

Lifetime shift work exposure: association with anthropometry, body composition, blood pressure, glucose and heart rate variability.

Objective: To evaluate the association between lifetime exposure to shift work and blood pressure, fasting glucose (FG), anthropometric variables, body composition and heart rate variability (HRV).

Methods: Male shift workers (N=438) were evaluated using principal component (PC) analysis. The variables used were: weight, body mass index (BMI), waist circumference (WC), neck circumference (NC), hip circumference (HC), waist-to-hip ratio (WHR), waist-to-height ratio (WHtR), body fat mass (BFKg), body fat percentage (BF%), visceral fat area (VFA), FG, systolic (SBP) and diastolic blood pressure (DBP), and HRV variables.

Ability of body mass index to predict abnormal waist circumference: receiving operating characteristics analysis.

Background: Body mass index (BMI) and waist circumference (WC) are the most used anthropometric measures to identify obesity. While BMI is considered to be a simple and accurate estimate of general adiposity, WC is an alternative surrogate measure of visceral obesity. However, WC is subject to significant inter-examiner variation.

Derivation and external validation of a simple prediction model for the diagnosis of type 2 diabetes mellitus in the Brazilian urban population.

A risk score model was developed based in a population of 1,224 individuals from the general population without known diabetes aging 35 years or more from an urban Brazilian population sample in order to select individuals who should be screened in subsequent testing and improve the efficacy of public health assurance. External validation was performed in a second, independent, population from a different city ascertained through a similar epidemiological protocol. The risk score was developed by multiple logistic regression and model performance and cutoff values were derived from a receiver operating characteristic curve.

A comparative study of methods for diagnosis of obesity in an urban mixed-race population in Minas Gerais, Brazil.

Background: Obesity is defined as an excess of total body fat and may be assessed by different methods. The objective of the present study was to establish the discriminatory power of anthropometric data in determining obesity.

Methods: The subjects comprised 685 individuals, aged 20-79 years, sampled from a population-based survey.

Lipoprotein(a) as a risk factor associated with ischemic heart disease: Ouro Preto Study.

Evidences suggest that lipoprotein(a) [Lp(a)] is an important risk factor for cardiovascular disease. However, literature has been controversial in confirming its role as an independent risk factor for cardiovascular disease. The objective of the present study is to evaluate the association between serum levels of Lp(a) and ischemic heart disease as well as other cardiovascular risk factors in a population-based study conducted on a local cohort of the Brazilian population.