Cut-off points of anthropometric markers associated with hypertension and diabetes in Peru: Demographic and Health Survey 2018.

OBJECTIVE: To determine the optimal anthropometric cut-off points for predicting the likelihood ratios of hypertension and diabetes in the Peruvian population. DESIGN: A cross-sectional study was performed to establish cut-off values for body mass index (BMI), waist circumference (WC), waist:height ratio (WHtR) and Conicity index (C-index) associated with increased risk of hypertension and diabetes. Youden's index (YIndex), area under the curve (AUC), sensitivity and specificity were calculated. SETTING: Peruvian households. PARTICIPANTS: Peruvian population over the age of 18 years. RESULTS: A total of 31 553 subjects were included, 57 % being women. Among the women, 53·06 % belonged to the 25- to 44-year-old age group [mean age: 41·66 in men and 40·02 in women]. The mean BMI, WHtR and C-index values were higher in women 27·49, 0·61, 1·30, respectively, while the mean WC value was higher in men 92·12 cm (sd ± 11·28). The best predictors of hypertension in men were the WHtR (AUC = 0·64) and the C-index (AUC = 0·64) with an optimal cut-off point of 0·57 (YIndex = 0·284) and 1·301 (YIndex = 0·284), respectively. Women showed an AUC of 0·63 and 0·61 in the WHtR and C-index, respectively, with an optimal cut-off of 0·61 (YIndex = 0·236) and 1·323 (YIndex = 0·225). The best predictor for diabetes was the C-index: with an AUC = 0·67 and an optimal cut-off of 1·337 (YIndex = 0·346) for men and an AUC = 0·66 and optimal cut-off of 1·313 (YIndex = 0·319) for women. CONCLUSIONS: Our findings show that in Peruvian adults, the WHtR and the C-index have the strongest association with hypertension in both sexes. Likewise, the C-index had the strongest association with diabetes.

Factors associated with hindering the acceptance of HPV vaccination among caregivers - A cross-sectional study in Argentina.

BACKGROUND: The northeastern region of Argentina has the highest age-adjusted cervical cancer mortality rates. Given the strong link between HPV infections and cervical cancer, one of the main interventions is the population-based use of HPV vaccines. However, the acceptability is not very clear in low- and middle-income countries. The purpose of this study was to estimate the level of HPV vaccine acceptance and associated determinants among caregivers of girls in a northeastern city of Argentina. METHODS: A school-based survey was conducted in 2015 using a multistage sampling method. The primary sample unit were schools stratified by socioeconomic status selected at random, and caregivers of school girls were interviewed. The acceptability was determined using the adapted Theory of Planned Behavior. We performed logistic regression models to assess associated determinants. RESULTS: The study included 347 caregivers. The intention to vaccinate was 59.88%. A positive attitude of caregivers (aOR 4.67; 3.11-7.03) and positive influence of social norms (aOR 1.95; 1.03-3.70) were the main predictors independently associated to the intention to vaccinate against HPV. In contrast, practicing a Christian non-Catholic religion decreased the intention to vaccinate against HPV (OR 0.59; 0.36-0.95). All other factors evaluated were not significantly associated with intention to vaccinate against HPV. CONCLUSIONS: This study shows that evaluating attitudes, normative social beliefs, and perceived self-efficacy regarding HPV vaccination can be of utmost importance for mapping and planning of health-related strategies in developing countries.

An Educational Intervention to Improve Statin Use: Cluster RCT at the Primary Care Level in Argentina.

INTRODUCTION: Statins are essential drugs for high cardiovascular disease (CVD) risk management; however, there is still low adherence to good clinical practice guidelines for statin use at the primary care level in low- and middle-income countries. This study aimed to test whether a complex intervention targeting physicians improves treatment and control of hypercholesterolemia among patients with moderate to high CVD risk in Argentina. STUDY DESIGN: Cluster RCT. SETTING/PARTICIPANTS: Ten primary care centers from the public healthcare system of Argentina. INTERVENTION: Primary care physicians in the intervention group received an educational program with three main components: (1) an intensive 2-day training workshop; (2) educational outreach visits; and (3) a mobile health application installed on the physician's smartphones. MAIN OUTCOME MEASURES: Reduction in mean low-density lipoprotein cholesterol level, reduction in mean Framingham risk score, proportion of patients receiving an appropriate statin dose, and mean annual number of primary care center visits. RESULTS: Data were analyzed in 2017-2018. Between April 2015 and April 2016, a total of 357 participants were enrolled (179 patients in the intervention group and 178 in the control group). The global follow-up rate was 97.2%. At the end of the follow-up period, there was no difference in low-density lipoprotein cholesterol levels in any of the follow-up points among the groups. Mean CVD risk had a significant net difference in the first 6 months in the intervention group versus the control group (-4.0, 95% CI = -6.5, -1.5). At the end of follow-up, there was an absolute 41.5% higher rate of participants receiving an appropriate statin dose in the intervention group versus the control group. CONCLUSIONS: Although the intervention did not reach a reduction in cholesterol levels, it had a significant positive impact on the promotion of adequate use of clinical practice guidelines. TRIAL REGISTRATION: This study is registered at www.clinicaltrials.gov NCT02380911.

[Maternal factors associated to congenital transmission of Chagas disease in children born and siblings in Chaco province, Argentina.] / Transmisión congénita y factores maternos de la enfermedad de Chagas en niños al nacer y sus hermanos en la provincia del Chaco, Argentina.

Introduction: After vector-borne transmission, the congenital form is the most important to maintain the endemic. The probability of congenital transmission may depend on factors that vary between different countries and geographic areas. This study was carried out with the objective of estimating the proportion of congenital transmission of Chagas disease and maternal factors associated to the T. cruzi infection in newborns and their siblings during 2011 in four hospitals of the Province of Chaco. Methods: A cross sectional study was performed. A home visit was made to children aged above 10 months born during 2011 whom their mother present T cruzi infection. Blood samples were taken from both the newborns and their siblings and were processed for diagnosis of T. cruzi infection with HAI and ELISA. We found 247 mothers infected with T cruzi, and blood samples were obtained from 246 newborns and 556 of their siblings. Results: Of the 246 children born in 2011, a total of 6.1% (95% CI = 3.6-9.6) resulted with positive serology, as well as 7.7% of their siblings (95% CI = 5.7-10.1) and the clinic visits of those born in 2011 and their siblings in the health center was associated with a lower probability of congenital transmission (OR = 0.21 and 0.36, respectively). Conclusions: The transmission rate is consistent with the values reported in Argentina and only multiparity was a mother factor associated with the higher probability of congenital transmission.

Introducción: Luego de la transmisión vectorial, la congénita, es la forma más importante para mantener la endemia. La probabilidad de transmisión congénita puede depender de factores que varían entre los diferentes países y áreas geográficas. Se realizó este trabajo con el objetivo de estimar la proporción de transmisión congénita y explorar factores maternos asociados a la enfermedad de Chagas en niños al nacer y sus respectivos hermanos en cuatro hospitales de la Provincia del Chaco. Métodos: Estudio transversal. Se realizó una visita al domicilio de niños de 10 meses de edad o mayores, nacidos durante el año 2011, hijos de mujeres con infección por T cruzi. Se extrajeron muestras sanguíneas tanto de los niños al nacer como de sus hermanos y se procesaron para diagnóstico de infección por T cruzi con HAI y ELISA. Resultados: Se localizaron a 247 madres infectadas con T. cruzi, y se obtuvieron muestras de sangre de 246 niños al nacer y de 556 de sus hermanos. Del total de nacidos en el año 2011, el 6,1% (IC 95%= 3,6-9,6) resultaron con serología positiva, así como 7,7%; de sus hermanos (IC 95%= 5,7-10,1) y el control de salud de ambos niños en el centro de atención primaria se asoció con una menor probabilidad de transmisión congénita (OR=0,21 y 0,36 respectivamente).Conclusión. La tasa de transmisión es consistente con los valores reportados en el país y solo la multiparidad fue un factor asociado a la mayor probabilidad de transmisión congénita. Conclusión: La tasa de transmisión es consistente con los valores reportados en el país y solo la multiparidad fue un factor asociado a la mayor probabilidad de transmisión congénita.

[Impact of an educational program related to basic knowledge of Chagas disease in a population of the Argentine Northeast.] / Impacto de un programa de educación sanitaria sobre los conocimientos básicos de la Enfermedad de Chagas en una población del Noreste argentino.

Introduction: In Avia Terai city, in Northeast of Argentina, a local program of Prevention and Control of Chagas disease was developed, guided by the principles of Primary Health Care. The objective of this study was to evaluate the change in knowledge regarding Chagas disease after the implementation of the strategy of Information, Education and Social Communication component of the local program in the urban area of Avia Terai in 2012. Methods: A cross-sectional design was used in two moments. A multistage sampling was carried out. The unit of analysis corresponded to heads of household of the selected house. A questionnaire adapted from Sanmartino and Crocco was used, which includes 3 dimensions and 15 basic knowledge referring to Chagas disease. Results. 609 residents were surveyed. Regarding the level of basic knowledge about Chagas disease, in level III an increase was observed in 2012 with respect to the previous year, from 56.6% to 66.2% (p> 0.0001). While regarding the congenital transmission, a decrease in the proportion of correct responses was observed. Conclusion. After the implementation of a local program of information, education and social communication, an increase in basic knowledge about Chagas disease was observed. Results: 609 residents were surveyed. Regarding the level of basic knowledge about Chagas disease, in level III an increase was observed in 2012 with respect to the previous year, from 56.6% to 66.2% (p> 0.0001). While regarding the congenital transmission, a decrease in the proportion of correct responses was observed. Conclusion: After the implementation of a local program of information, education and social communication, an increase in basic knowledge about Chagas disease was observed.

Introducción: En la localidad de Avia Terai, Noreste de Argentina, se desarrolló un programa local de Prevención y Control de la enfermedad de Chagas orientado en los principios de la Atención Primaria de la Salud. El objetivo general de este trabajo fue evaluar el cambio en los conocimientos respecto a la enfermedad de Chagas luego de la implementación de la estrategia del componente de información, educación y comunicación social del programa local en la zona urbana de la localidad de Avia Terai en el año 2012. Métodos: Se empleó un diseño de corte transversal en dos momentos. Se realizó un muestreo polietápico por conglomerados. La unidad de análisis correspondió a jefes y jefas de hogar de la vivienda sorteada. Se utilizó el cuestionario adaptado de Sanmartino y Crocco, el cual incluye 3 dimensiones y 15 conocimientos básicos, referidos a la enfermedad de Chagas. Resultados: En cuanto al nivel de conocimientos básicos sobre la enfermedad de Chagas, en el nivel III se observó un aumento en el año 2012 respecto del año anterior, de 56,6% al 66,2% (p>0,0001). Mientras que en cuanto a la forma de transmisión congénita, se observó una disminución de la proporción de respuestas correctas respecto al año anterior. Conclusión: Luego de la implementación de un programa local de información, educación y comunicación social, se observó un aumento en los conocimientos básicos sobre la enfermedad de Chagas.

Tasa de filtración glomerular conservada en personas mayores. Un estudio de base poblacional en el Cono Sur de América Latina

Introduction: Kidneys are affected by the aging process, usually suffering a progressive glomerular filtration rate (GFR) reduction of around 1 ml/year as of 30 years of age. Nevertheless, few older subjects show a stable GFR over time. This phenomenon has not been exhaustively studied, and even less in the Southern Cone. Aim: The aim was to estimate the prevalence of preserved GFR in a representative sample of older adults and explore the association between cardiovascular risk factors and preserved GFR in older individuals. Methods: We used data from a cross-sectional survey of a random sample of 1571 participants aged 65-74 years from 4 cities of the Southern Cone. We describe the prevalence of eGFR ≥80 ml/min/1.73 m2 and sociodemographic, biological, behavioral risk factors and medication use. Backward stepwise logistic regression analysis was used to study the effect of cardiovascular risk factors on eGFR ≥80 ml/min. Results: In this study, 962 had an eGFR >80 ml/min/1.73 m2 and 154 were healthy adults (Prevalence= 17.01% (95%CI 14.5%; 19.9%)). The median eGFR in the full sample was 85.53 ml/min/1.73 m² (IQR: 73.12-91.26). The prevalence of eGFR >80 ml/min/1.73 m2 was higher among men. Overall, older adults with no cardiovascular risk factors and eGFR >80 ml/min/1.73 m2 were predominantly men and showed a lower prevalence of dyslipidemia. Conclusion: The present study documented that 17% of healthy older individuals have preserved glomerular filtration rate (eGFR>80 ml/min/1.73 m2) despite their advanced age.

Introducción: Los riñones se ven afectados por el proceso de envejecimiento, sufriendo habitualmente una reducción progresiva de la tasa de filtración glomerular (TFG) de alrededor de 1 ml/año a partir de los 30 años de edad. Sin embargo, son pocos los sujetos de edad avanzada que muestran una TFG estable a lo largo del tiempo. Este fenómeno no ha sido estudiado exhaustivamente, y menos aún en el Cono Sur. Objetivo: El objetivo fue estimar la prevalencia de la TFG conservada en una muestra representativa de adultos mayores y explorar la asociación entre los factores de riesgo cardiovascular y la TFG conservada en individuos de edad avanzada. Métodos: Utilizamos datos de una encuesta transversal de una muestra aleatoria de 1571 participantes de 65-74 años de edad de 4 ciudades del Cono Sur. Describimos la prevalencia de FGe ≥80 ml/min/1,73 m2 y los factores de riesgo sociodemográficos, biológicos y conductuales y el uso de medicamentos. Se utilizó un análisis de regresión logística por pasos hacia atrás para estudiar el efecto de los factores de riesgo cardiovascular sobre la TFGe ≥80 ml/min. Resultados: En este estudio, 962 tenían una TFGe >80 ml/min/1,73 m2 y 154 eran adultos sanos (Prevalencia= 17,01% (IC 95% 14,5%; 19,9%)). La mediana de la TFGe en la muestra completa fue de 85,53 ml/min/1,73 m² (IQR: 73,12-91,26). La prevalencia de la TFGe >80 ml/min/1,73 m2 fue mayor entre los hombres. En general, los adultos mayores sin factores de riesgo cardiovascular y con una TFGe >80 ml/min/1,73 m2 eran predominantemente hombres y mostraban una menor prevalencia de dislipidemia. Conclusiones: El presente estudio documentó que el 17% de los individuos mayores sanos tienen una tasa de filtración glomerular preservada (TFGe>80 ml/min/1,73 m2) a pesar de su avanzada edad.

Antecedentes familiares de cáncer de mama y colorrectal en una cohorte de población general en dos ciudades de Argentina / Family History of Breast and Colorectal Cancer in a Population-Based Cohort in two cities of Argentina

INTRODUCCIÓN: Los cánceres de mama (CM) y colorrectal (CCR) presentan una elevada carga de enfermedad en Argentina, por lo que el estudio de la epidemiología de estos tumores constituye una prioridad en salud pública. El objetivo del presente trabajo fue describir la prevalencia de antecedentes familiares de CM y CCR, y estimar la incidencia de los tumores en adultos de 35 a 74 años de dos ciudades de Argentina: Bariloche y Marcos Paz. MÉTODOS: En el marco de la cohorte prospectiva de población general CESCAS I (Estudio de detección y seguimiento de enfermedad cardiovascular y factores de riesgo en el Cono Sur de Latinoamérica), se recolectó información individual sobre antecedentes familiares de CM y CCR en una muestra representativa de las ciudades de Bariloche y Marcos Paz. Los casos de cáncer fueron investigados mediante documentación médica respaldatoria. RESULTADOS: Durante 2016-2017 se obtuvo información de 3245 participantes. El 8,4% de la población reportó antecedente familiar de CCR, y el 15,2% de las mujeres, de CM. La incidencia anual para el período 2011-2017 fue de 55,2/100 000 mujeres de 35 a 74 años (IC95%: 22,8-133,7) para CM y 8,5/100 000 adultos de 35 a 74 años (IC95%: 15,3-96,8) para CCR. CONCLUSIONES: Además de garantizar el acceso universal a los programas de tamizaje, se debe tener en cuenta la importancia de indagar sobre los antecedentes familiares de cáncer para identificar pacientes con riesgo aumentado, que requieren algoritmos particulares de detección temprana y vigilancia.

INTRODUCTION: Breast cancer (BC) and colorectal cancer (CRC) both present a high burden of disease in Argentina. Hence, studying the epidemiology of these tumors constitutes a public health priority. The objective of this study was to describe the prevalence of family history of BC and CRC and to estimate the incidence of these tumors in adults aged between 35 and 74 years from two cities in Argentina: Bariloche and Marcos Paz. METHODS: As part of the prospective population-based cohort CESCAS I (Study of detection and monitoring of cardiovascular disease and risk factors in the Southern Cone of Latin America), individual information on family history of BC and CRC was collected from a representative sample of the cities of Bariloche and Marcos Paz. Cancer cases were investigated using supporting medical documentation. RESULTS: During 2016-2017, information from 3245 participants was obtained. Family history of CRC was reported by 8.4% of the population, and 15.2% of women reported a family history of BC. The annual incidence for the 2011-2017 period was 55.2/100 000 women aged 35 to 74 years (95%CI: 22.8-133.7) for BC and 38.5/100 000 adults aged 35 to 74 years (95%CI: 15.3-96.8) for CRC.CONCLUSIONS: Besides guaranteeing universal access to screening programs, it is important to evaluate family history of cancer to identify patients with increased risk, who require specific early detection and surveillance algorithms.