Clinical inertia in newly diagnosed type 2 diabetes mellitus among patients attending selected healthcare institutions in Colombia.

BACKGROUND: The burden of disease of diabetes in Colombia have increased in the last decades. Secondary prevention is crucial for diabetes control. Many patients already treated remain with poor glycemic control and without timely and appropriate treatment intensification. This has been called in the literature as Clinical Inertia. Updated information regarding clinical inertia based on the Colombian diabetes treatment guidelines is needed. OBJECTIVE: To measure the prevalence of clinical inertia in newly diagnosed Type 2 Diabetes Mellitus (T2DM) patients in healthcare institutions in Colombia, based on the recommendations of the current official guidelines. METHODS: An observational and retrospective cohort study based on databases of two Health Medical Organizations (HMOs) in Colombia (one from subsidized regimen and one from contributory regimen) was conducted. Descriptive analysis was performed to summarize demographic and clinical information. Chi-square tests were used to assess associations between variables of interest. RESULTS: A total of 616 patients with T2DM (308 for each regimen) were included. Median age was 61 years. Overall clinical inertia was 93.5% (87.0% in contributory regimen and 100% in subsidized regimen). Patients with Hb1Ac ≥ 8% in the subsidized regimen were more likely to receive monotherapy than patients in the contributory regimen (OR 2.33; 95% CI 1.41-3.86). CONCLUSIONS: In this study, the prevalence of overall clinical inertia was higher in the subsidized regime than in the contributory regime (100% vs 87%). Great efforts have been made to equalize the coverage between the two systems, but this finding is worrisome with respect to the difference in quality of the health care provided to these two populations. This information may help payers and clinicians to streamline strategies for reducing clinical inertia and improve patient outcomes.

Validation of hemoglobin measurement in venous blood using HemoCue for the Ensanut 2022.

OBJECTIVE: To validate hemoglobin (Hb) concentration in venous blood (VB) using the HemoCue 201+ in a subsample of children and women from the Mexican National Health and Nutrition Survey 2022. MATERIALS AND METHODS: Prior to field work 50 HemoCue 201+ devices were verified using venous blood. During the field work 57 children (aged 1-11) and 62 women (aged 12-49) donated 3 mL of VB each. Hb was measured in each device of HemoCue 201+ and in a hematologic autoanalyzer for the validation. RESULTS: No significant bias was found in most of the devices. An adjustment criterion was used for 22 devices. Hb mean difference results were -0.049±0.578 g/dL in children and -0.098±0.628 g/dL in women. CONCLUSIONS: The HemoCue 201+ is a valid tool for estimating Hb concentration to produce reliable estimates of anemia prevalence when using venous blood.

Post-COVID-19 syndrome: Descriptive analysis based on a survivors' cohort in Colombia.

Background: The prevalence of post-COVID-19 Syndrome (PCS) is estimated to be between 10% and 20%. The main reported symptoms are fatigue, memory alterations, dyspnea, sleep disorders, arthralgia, anxiety, taste alterations, coughing and depression. This study aims to determine the prevalence of post-COVID-19 symptoms in a group of Colombian patients who were recruited during their outpatient appointments. Methodology: This cross-sectional study was conducted between December 2021 to May 2022. It included patients from outpatient facilities located in five main cities in Colombia who were positive for SARS-CoV-2 infection detected by reverse transcription-polymerase chain reaction (RT-PCR) testing and reported PCS in the following 12 weeks after their COVID-19 diagnosis. Results: A total of 1047 individuals >18 years old met the inclusion criteria and were included in the study. The median age was 46 years old. 68.2% of the participants were female, 41.5% of the patients reported having a pre-existent condition (hypertension, anxiety disorder, diabetes, hyperthyroidism, obesity and asthma). Only 22% had received at least one dose of COVID-19 vaccine prior to the COVID-19 episode registered. The more prevalent symptoms within our group are described as follows: fatigue (53.3%), dyspnea (40.3%), arthralgia and/or myalgia (43%), cephalea (40.5%), sleep disorders (35.7%) and coughing (31.3%). 72% of the patients presented four or more post-COVID 19 symptoms, 9% two symptoms, and 10% only one symptom. Conclusion: The findings of this study are consistent with international literature publicly available. The distribution and prevalence of post-COVID symptoms highlight the importance of further research to improve understanding and its potential consequences and implications in terms of quality of life and health care planning services.

Aflatoxin exposure in adults in southern and eastern Mexico in 2018: A descriptive study.

OBJECTIVE: To estimate the frequency of detection and levels of aflatoxin B1-lysine adduct (AFB1-lys), an important hepatocellular carcinoma (HCC) risk factor, in eastern and southern Mexico. MATERIALS AND METHODS: We determined serum AFB1-lys using mass spectrometry in a representative sample of 952 adults (weighted n = 7,493,354) from five states (Campeche, Chiapas, Tamaulipas, Veracruz and Yucatán) in 2018. We calculated overall and subgroup-specific frequency of detection and 95% confidence intervals (95%CI) and median AFB1-lys levels and quartiles. RESULTS: The overall frequency of detection of AFB1-lys was 91.9% (95%CI 88.6, 94.3). The median AFB1-lys level was 0.172 pg/µL (Q1-Q3, 0.060-0.582). Levels differed geographically (median pg/µL, 0.361 for Veracruz and 0.061 for Yucatan) and were higher among men and older individuals. Levels were almost three times higher in rural relative to urban areas (0.317 vs. 0.123 pg/µL). We observed higher AFB1-lys exposure in lower socioeconomic status (SES) level populations. CONCLUSION: AFB1-lys frequency of detection was very high and exposure levels were highest in Veracruz, men, rural areas, and among persons of lower SES. Understanding modifiable HCC risk factors in populations with unique epidemiological patterns could inform preventative interventions.

Application of the ASCO value framework to evaluate the clinical and economic value of enzalutamide and apalutamide in the early stages of prostate cancer in Colombia.

Introduction: Prostate cancer has increased in recent years, increasing the costs associated with its treatment. Second-generation oral antiandrogens have emerged as an attractive therapeutic option. Objective: To compare the health value provided by enzalutamide and apalutamide, by evaluating two stages of prostate cancer: non-metastatic castration-resistant prostate cancer (nmCRPC) and metastatic hormone-sensitive prostate cancer (mHSPC). Methods: To establish, through the American Society of Clinical Oncology (ASCO) value framework, a contrast between two technologies in two stages of prostate cancer. The monthly cost of the two technologies was calculated according to the current price regulation norm in Colombia. Results: Enzalutamide showed a higher net health benefit score compared to apalutamide for both nmCRPC (48.33 versus 33.46) and mHSPC (52.0 versus 40.75). The cost per net health benefit point for the nmCRPC stage was $214,723 Colombian Pesos (COP) ($54.84 USD) with enzalutamide compared to $291,925 COP ($74.56 USD) with apalutamide, and for the mHSPC stage was $199,692 COP ($51.00 USD) with enzalutamide and $239,701 COP ($61.22 USD) with apalutamide. Conclusion: After comparing enzalutamide versus apalutamide in the nmCRPC and mHSPC stages through the ASCO value framework, enzalutamide showed a more prominent net clinical benefit and a lower investment per point awarded.

Corrigendum: Factors Associated to Psychological Distress During the COVID-19 Pandemic Among Healthcare Workers in Ecuador.

[This corrects the article DOI: 10.3389/ijph.2022.1604626.].

Use of semantic segmentation for mapping Sargassum on beaches.

The unusual arrival of Sargassum on Caribbean beaches is an emerging problem that has generated numerous challenges. The monitoring, visualization, and estimation of Sargassum coverage on the beaches remain a constant complication. This study proposes a new mapping methodology to estimate Sargassum coverage on the beaches. Semantic segmentation of geotagged photographs allows the generation of accurate maps showing the percent coverage of Sargassum. The first dataset of segmented Sargassum images was built for this study and used to train the proposed model. The results demonstrate that the currently proposed method has an accuracy of 91%, improving on the results reported in the state-of-the-art method where data was also collected through a crowdsourcing scheme, in which only information on the presence and absence of Sargassum is displayed.

Factors Associated to Psychological Distress During the COVID-19 Pandemic Among Healthcare Workers in Ecuador.

Objective: The global COVID-19 pandemic has challenged health systems. Healthcare professionals had to face harsh conditions that have caused psycho-emotional consequences. Ecuador has been one of the countries hit hardest by the pandemic in Latin America. The objective of this study was to analyse the levels of psychological distress among healthcare workers in Ecuador during the COVID-19 pandemic. Methods: A cross-sectional descriptive study was conducted with a convenience sample of 1,056 healthcare professionals, assessing their psychological distress, physical symptoms of COVID-19, state of health, the preventive measures adopted, and the history of contact with people infected with the SARS-CoV2 virus. Results: showed that 66.0% of the participants manifested psychological distress, with significantly higher levels in women with symptoms of COVID-19 and previous contact with infected people or objects (p < 0.001). However, adherence to preventive measures and perception of health were associated with less psychological distress (p < 0.001). Conclusions: The importance of monitoring the mental health of healthcare workers during the COVID-19 pandemic was confirmed, having identified factors associated with the development of psychological distress among professionals in Ecuador.

Model-Driven Impact Quantification of Energy Resource Redundancy and Server Rejuvenation on the Dependability of Medical Sensor Networks in Smart Hospitals.

The spread of the Coronavirus (COVID-19) pandemic across countries all over the world urges governments to revolutionize the traditional medical hospitals/centers to provide sustainable and trustworthy medical services to patients under the pressure of the huge overload on the computing systems of wireless sensor networks (WSNs) for medical monitoring as well as treatment services of medical professionals. Uncertain malfunctions in any part of the medical computing infrastructure, from its power system in a remote area to the local computing systems at a smart hospital, can cause critical failures in medical monitoring services, which could lead to a fatal loss of human life in the worst case. Therefore, early design in the medical computing infrastructure's power and computing systems needs to carefully consider the dependability characteristics, including the reliability and availability of the WSNs in smart hospitals under an uncertain outage of any part of the energy resources or failures of computing servers, especially due to software aging. In that regard, we propose reliability and availability models adopting stochastic Petri net (SPN) to quantify the impact of energy resources and server rejuvenation on the dependability of medical sensor networks. Three different availability models (A, B, and C) are developed in accordance with various operational configurations of a smart hospital's computing infrastructure to assimilate the impact of energy resource redundancy and server rejuvenation techniques for high availability. Moreover, a comprehensive sensitivity analysis is performed to investigate the components that impose the greatest impact on the system availability. The analysis results indicate different impacts of the considered configurations on the WSN's operational availability in smart hospitals, particularly 99.40%, 99.53%, and 99.64% for the configurations A, B, and C, respectively. This result highlights the difference of 21 h of downtime per year when comparing the worst with the best case. This study can help leverage the early design of smart hospitals considering its wireless medical sensor networks' dependability in quality of service to cope with overloading medical services in world-wide virus pandemics.

Cost-Minimization and Budget Impact Analysis of a Hexavalent Vaccine (Hexaxim®) in the Colombian Expanded Program on Immunization.

OBJECTIVES: To evaluate cost implications of a hexavalent vaccine (diphtheria, tetanus, and acellular pertussis [DTaP]-inactivated polio vaccine [IPV]-hepatitis B [HB]-Haemophilus influenzae type B [Hib] polysaccharide conjugated to T protein [PRP∼T]) as an alternative to DT-whole-cell pertussis (wP)-HB//Hib, DTwP, IPV, and oral polio vaccines in the Expanded Program on Immunization schedule in Colombia. METHODS: Primary vaccination (DTaP-IPV-HB-PRP∼T or DTwP-HB-Hib + IPV [2, 4, 6 months]) and booster (DTaP-IPV-HB-PRP∼T or DTwP + oral polio vaccine [18 months]) (scenario 1) and primary vaccination only (DTaP-IPV-HB-PRP∼T or DTwP-HB-Hib + IPV) (scenario 2) were evaluated. An estimated cost-minimization analysis was based on a micro costing technique for vaccination-associated activities. Adverse event (AE)-associated costs, out-of-pocket costs, and productivity losses for caregivers were included. A budget impact (12-month temporal horizon) was estimated according to the distribution of full-term and premature infants. A 5% annual discount rate was used. A 2-way univariate (tornado) analysis evaluated which variables had the greatest impact on the overall cost. RESULTS: DTaP-IPV-HB-PRP∼T resulted in a cost increase of 29.38% (scenario 1) and 22.19% (scenario 2) for full-term infants and a decrease of 0.99% (scenario 1) and 18.88% (scenario 2) for premature infants, probably because of the higher incidence of wP-related AEs and associated costs in premature infants. With a 100% replacement rate, the budget impact for full-term infants and full-term plus premature infants was 23.73% and 21.80% (scenario 1), respectively, and 13.02% and 11.14% (scenario 2), respectively, of the national immunization program budget. The variables with most impact were the hexavalent vaccine price and costs associated with the pentavalent safety profile. CONCLUSIONS: Incorporation of the hexavalent vaccine in the Expanded Program on Immunization schedule would lead to an increase in spending largely mitigated by reduced AE incidence and reduced logistic and social costs.

Desarrollo del lenguaje en hijos e hijas de madres adolescentes por área de residencia, Ensanut 100k / Language development in children of adolescent mothers by residence area, Ensanut 100k

Resumen: Objetivo: Evaluar la asociación entre embarazo en la adolescencia y desarrollo del lenguaje (DL), en niños(as) residentes en zonas económicamente vulnerables de México. Material y métodos: Estimación y comparación del puntaje estandarizado de lenguaje de niños(as) de 12-59 meses participantes en la Ensanut 100k e hijos(as) de madres que al nacimiento fueron adolescentes (12-19 años) o adultas (>20 años). La asociación se estimó mediante regresión lineal multivariada y probamos una interacción entre condición materna y lugar de residencia. Resultados: Los hijos(as) de adolescentes que residen en áreas urbanas tuvieron un DL menor que los hijos(as) de madres adultas, (ß= -0.33 IC95%: -0.65 a -0.01; p interacción <0.01). Sin embargo, la disponibilidad de libros o apoyo materno al aprendizaje redujeron esta diferencia. Conclusiones: La presión sociocultural hacia las adolescentes en zonas urbanas podría explicar los resultados observados; no obstante, esta población podría ser susceptible de estrategias dirigidas a mejorar la relación madre-hijo y el apoyo al aprendizaje.

Abstract: Objetive: To evaluate the association between adolescent pregnancy and language development, in children living in socio-economic vulnerable areas of Mexico. Materials and methods: We estimated the standardized language score of children age 12-59 months who participated in the Ensanut 100k. Teenage mothers (TM) were those who at delivery was between 12-19 years old. The association was estimated using multivariate linear regression; moreover, we evaluated an interaction between type of mother and place of residence. Results: Children of TM who lived in urban areas had lower standardized language score than those children of adult mothers (ß= -0.33 95%CI: -0.65 a -0.01; p for interaction<0.01). However, book availability and/or mother's support for learning significantly reduce this difference. Conclusions: Sociocultural pressures towards TM in urban areas could explain the results; nevertheless, this population could be susceptible to strategies aimed to improve the mother-child relationship and support for learning.

Language development in children of adolescent mothers by residence area, Ensanut 100k / Desarrollo del lenguaje en hijos e hijas de madres adolescentes por área de residencia, Ensanut 100k.

Objective: To evaluate the association between adolescent pregnancy and language development in children living in socioeconomically vulnerable areas of Mexico. Materials and methods: We estimated the standardized language score of children aged 12-59 months who participated in the Ensanut 100k. Teenage mothers (TM) were those who at delivery was between 12-19 years old. The association was estimated using multivariate linear regression; moreover, we evaluated an interaction between type of mother and place of residence. Results: Children of TM who lived in urban areas had lower standardized language scores than those of adult mothers (ß= -0.33 95%CI: -0.65 a -0.01; p for interaction<0.01). However, book availability and/or mother's support for learning significantly reduce this difference. Conclusions: Sociocultural pressures towards TM in urban areas could explain the results; nevertheless, this population could be susceptible to strategies aimed to improve the mother-child relationship and support for learning.

Análisis retrospectivo de las características y utilización de los recursos de salud en pacientes con cáncer de próstata resistente a la castración metastásico tratados con Enzalutamida o Acetato de Abiraterona en Colombia / Retrospective Analysis of the Characteristics and Utilization of Health Resources in Patients with Castration Resistant Prostate Cancer Treated with Enzalutamide or Abiraterone Acetate in Colombia

Objetivo Describir las características demográficas, clínicas, los recursos de salud utilizados y los costos directos del tratamiento del cáncer de próstata resistente a la castración metastásico (CPRCm), tratados con enzalutamida o acetato de abiraterona en Colombia. Métodos Mediante un estudio de corte transversal se analizaron datos de utilización de servicios de una EPS (entidad promotora de salud) colombiana. Para ello, se identificaron los pacientes que durante el 1 de julio de 2016 y 30 de junio de 2017 (fecha índice) presentaron registro de uso de enzalutamida o acetato de abiraterona y se confirmaron sus antecedentes de castración química o quirúrgica (6 meses previos a la fecha índice). Se establecieron las frecuencias de uso de servicios en dicha población y se extrajo el consumo reportado asociado a consultas (urgencias, consulta externa), procedimientos y medicamentos en el periodo de análisis. Los costos se organizaron por categorías y se reportaron en pesos colombianos (COP) 2016. Resultados se identificaron 161 pacientes con CPRCm con edad media de 77 años, se determinó que el departamento colombiano con más población de CPRCm en esta cohorte fue el Valle del Cauca, que 98,1% de los pacientes pertenecen al régimen contributivo y que 1,9% al subsidiado. El cálculo de la supervivencia con el índice de comorbilidad de Charlson mostró que esos pacientes tendrían una tasa de supervivencia de 0% a 10 años. Las comorbilidades más frecuentes encontradas fueron hipertensión, diabetes mellitus, insuficiencia renal y otras patologías tumorales relacionadas. El costo total de manejo de un paciente con CPRCm, que recibe de manera continua durante 12 meses abiraterona o enzalutamida es promedio $131.942.292 COP año. Esa cifra incluye tanto el uso de servicios como el consumo de medicamentos, y ese último representa cerca del 90% del costo. Conclusiones los pacientes con cáncer en estadio metastásico se caracterizan por presentar alta demanda de medicamentos, laboratorios, imágenes diagnósticas, visitas ambulatorias e ingresos hospitalarios. Debido a que es una muestra pequeña de pacientes, se requiere desarrollar una valoración posterior que permita corroborar los hallazgos encontrados en este estudio retrospectivo.

Objective describe the demographic, clinical characteristics, the health resources utilization and the direct costs of patients with metastatic castration-resistant prostate cancer (CPRCm) treated with Enzalutamide or Abiraterone Acetate in Colombia. Methods Through a descriptive retrospective analysis through the database of a Colombian health insurer, patients were identified who, during July 1st, 2016 and June 30th, 2017 (index date) were dispensed with enzalutamide or abiraterone acetate, medical history of chemical or surgical castration was confirmed (6 months prior to the index date). The frequencies of use of services in this population were established and the reported consumption associated with consultations (emergencies, outpatient consultation), procedures and medications in the period of analysis were extracted. The costs were organized by categories and were reported according to Colombian pesos (COP) 2016. Results In a cohort of 161 patients with CPRCm with an average age of 77 years, it was determined that Valle del Cauca is the Colombian department with the largest CPRCm population in this cohort. 98.1% of the patients belong to the contributory regimen and 1.9% to the subsidized. The calculation of the patient's survival with the Charlson Comorbidity Index (CCI) showed a 0% survival rate at 10 years and most frequent comorbidities were hypertension, diabetes mellitus, renal failure and other related tumor pathologies. The total cost of managing a patient with CPRCm, who receives continuous abiraterone or enzalutamide for 12 months on average is $ 131,942,292 COP per year, this figure includes both the use of services and the consumption of medications; the latter represents ∼90% of cost. onclusions These patients were characterized by being large demander of health services, namely, medicines, laboratories, images, outpatient visits and inpatient admission. Due to it is a small sample of patients, is necessary to develop a posterior evaluation to corroborate the findings found in this retrospective analysis.

Carga económica de la fibrilación auricular en Colombia / Financial burden of atrial defibrillation in Colombia

Resumen Objetivo: Determinar la carga económica de la fibrilación auricular en Colombia. Materiales y métodos: Se realizó un estudio retrospectivo sobre bases de datos de atención de pacientes con diagnóstico de fibrilación auricular. Los pacientes fueron identificados a partir de los diagnósticos registrados en las atenciones ambulatorias y hospitalarias, utilizando como referencia el código diagnóstico CIE-10 de fibrilación auricular (I48x). Luego de la identificación de los pacientes se construyó un algoritmo que simulaba la historia natural y de atención de la enfermedad, el cual fue elaborado a partir de guías de manejo de la enfermedad. Se utilizó una técnica de microcosteo en función de una base de datos oficial de una aseguradora colombiana, teniendo en cuenta la historia natural de la enfermedad construida. Resultados: El costo anual de un paciente con fibrilación auricular diagnosticada correctamente es de $6.218.179, el de un paciente con evento tromboembólico agudo o signos inespecíficos como primera manifestación de la enfermedad es de $23.665.300, y el de un paciente con un infarto previo al diagnóstico de fibrilación auricular es de $37.493.968. Conclusiones: En términos de costos, el paciente que se mantiene controlado pese a que se incurra en costos de tecnologías para su control, es menos costoso que aquel que genera episodios agudos.

Abstract Objective: To determine the financial cost of atrial defibrillation in Colombia. Materials and methods: A retrospective study was carried out using health care data bases on patients with a diagnosis of atrial fibrillation. The patients were identified from the diagnoses recorded in ambulatory and hospital care registers, using the atrial fibrillation ICD-10 diagnostic (I48x). After the patients were identified, an algorithm was constructed by using the management guidelines for the disease and that simulated the natural history and care of the disease. A micro-costing technique was used in accordance with an official data base of a Colombian insurance Company, taking into account the natural history of the disease constructed. Results: The mean annual cost of a patient correctly diagnosed with atrial fibrillation is $6,218.179, that of the patient with an acute thrombo-embolic event or non-specific signs as a first manifestation of the disease is $23,665.300, and that of the patient with an infarction prior to the diagnosis of atrial fibrillation is $37,493.968. Conclusions: In terms of costs, the patient that is maintained under control, despite the technological costs of their control, is less costly than one that has acute episodes.

[Methodological bases of the measurement of earlychildhood development in the Ensanut 100k survey]. / Bases metodológicas de lamedición de desarrollo infantiltemprano en la Ensanut 100k.

OBJECTIVE: The methods that were carried out for the inclusion of the early childhood development module in the Ensanut 100k are presented. MATERIALS AND METHODS: With this module and the questionnaire for children under five years-old, indicators of the state of health, development and well-being of children in the first five years of life are obtained. From November to December 2017, the sample design, instruments and manuals were defined and a test was carried out. Field staff were trained and standardized. The information was collected between January and June 2018. RESULTS: 3 892 children from 0 to 59 months of age were studied in the DIT Module of the Survey. CONCLUSIONS: Training and standardization of field personnel, by trained and standardized personnel, minimizes information biases.

OBJETIVO: Presentar los métodos realizados para la inclu-sión del módulo de Desarrollo Infantil Temprano (DIT) en la Ensanut 100k. MATERIAL Y MÉTODOS: Con dicho módulo y el cuestionario de menores de cinco años, se obtuvieron indicadores del estado de salud, desarrollo y bienestar de niñas/os en los primeros cinco años de vida.De noviembre a diciembre de 2017, se definió el diseño de la muestra, instrumentos y manuales, y se realizó una prueba piloto. Se capacitó y estandarizó al personal de campo. El levantamiento de información se realizó entre enero y junio de 2018. RESULTADOS: Se estudió en el módulo DIT de la encuesta a 3 892 niños/as de 0 a 59 meses de edad. CONCLUSIONES: La capacitación y estandarización del personal de campo, por parte de personal capacitado y estandarizado, minimiza los sesgos de información.

Bases metodológicas de la medición de desarrollo infantil temprano en la Ensanut 100k / Methodological bases of the measurement of early childhood development in the Ensanut 100k survey

Resumen Objetivo: Presentar los métodos realizados para la inclusión del módulo de Desarrollo Infantil Temprano (DIT) en la Ensanut 100k. Material y métodos: Con dicho módulo y el cuestionario de menores de cinco años, se obtuvieron indicadores del estado de salud, desarrollo y bienestar de niñas/os en los primeros cinco años de vida. De noviembre a diciembre de 2017, se definió el diseño de la muestra, instrumentos y manuales, y se realizó una prueba piloto. Se capacitó y estandarizó al personal de campo. El levantamiento de información se realizó entre enero y junio de 2018. Resultados: Se estudió en el módulo DIT de la encuesta a 3 892 niños/as de 0 a 59 meses de edad. Conclusiones: La capacitación y estandarización del personal de campo, por parte de personal capacitado y estandarizado, minimiza los sesgos de información.

Abstract Objective: The methods that were carried out for the inclusion of the early childhood development module in the Ensanut 100k are presented. Materials and methods: With this module and the questionnaire for children under five years-old, indicators of the state of health, development and well-being of children in the first five years of life are obtained. From November to December 2017, the sample design, instruments and manuals were defined and a test was carried out. Field staff were trained and standardized. The information was collected between January and June 2018. Results: 3 892 children from 0 to 59 months of age were studied in the DIT Module of the Survey. Conclusions: Training and standardization of field personnel, by trained and standardized personnel, minimizes information biases.

Breakfast Habits among Schoolchildren in the City of Uruguaiana, Brazil.

Breakfast is the first and most important meal of the day, and omitting it is associated with a greater probability of overweight and school absenteeism. The eating habits constituted in children depend on social, educational and economic factors, and they usually perpetuate into adulthood. For this reason, the most propitious stage for health promotion interventions on healthy nutrition is childhood. Specifically, in Brazil, malnutrition is relevant in children from low-income families although, currently, there are few studies that relate nutrition with the social factors. In this study, a reliability analysis of the Eating Habits of the School Population questionnaire was conducted, and the items referring to the breakfast habits and to some sociodemographic variables were selected. Subsequently, a total of 470 fourth grade pupils self-completed the questionnaire in 12 schools in Uruguaiana (Brazil). More than 50% of the mothers and more than 70% of the fathers worked in diverse areas of services and sales in stores or supermarkets. With regards to the hypothesis contrast, a significant relation was observed between the frequency of having breakfast with the father or the mother and having had breakfast (p < 0.001). This type of study favors a population analysis for the subsequent design and execution of health promotion activities.

[Factors associated with early childhooddevelopment in mexican children]. / Características infantiles y contextuales asociadas con el desarrollo infantil temprano en la niñez mexicana.

OBJECTIVE: To estimate levels of early childhood develop-ment (ECD) and associated factors in Mexican population aged 19-59 months. MATERIALS AND METHODS: The Ensanut 2018-19 evaluated ECD using the Early Childhood Development Index (ECDI) and level of language develop-ment. We used multivariate models, with logistic or linear regression, depending on the outcome variable. RESULTS: Children of wealthier households and with children's books at home are more likely of having an adequate ECDI; in contrast, children who experienced violent discipline methods are less likely. Children living in rural areas, with more highly educated mothers, who were not undernourished, and with support for learning have higher language scores. CONCLUSIONS: Public policies aimed to enhance early childhood development should take into account the associated modifiable factors.

OBJETIVO: Estimar el nivel de desarrollo infantil temprano (DIT) y sus factores asociados en población mexicana de 19 a 59 meses. MATERIAL Y MÉTODOS: La Encuesta Nacional de Salud Pública y Nutrición 2018-19 evaluó el DIT mediante el Índice de Desarrollo Infantil Temprano (ECDI) y el nivel de desarrollo de lenguaje. Se estimaron modelos multivariados de acuerdo con la variable de resultado, usando modelos de regresión logística o lineal. RESULTADOS: Los niños/as de hogares con mayor nivel socioeconómico y que cuentan con libros infantiles en el hogar tienen mayores posibilidades de DIT adecuado, mientras que los/as niños/as educados con métodos de disciplina violenta tienen menores posibilidades. Además,los niños/as residentes de áreas rurales, hijos/as de madres con mayor escolaridad, sin desnutrición y con oportunidades de aprendizaje tienen un mayor puntaje de lenguaje. CONCLUSIONES: Las políticas públicas encaminadas a mejorar el desarrollo en la primera infancia deben tomar en cuenta los factores modificables asociados.

Children's acute respiratory symptoms associated with PM2.5 estimates in two sequential representative surveys from the Mexico City Metropolitan Area.

BACKGROUND: Respiratory diseases are a major component of morbidity in children and their symptoms may be spatially and temporally exacerbated by exposure gradients of fine particulate matter (PM2.5) in large polluted urban areas, like the Mexico City Metropolitan Area (MCMA). OBJECTIVES: To analyze the association between satellite-derived and interpolated PM2.5 estimates with children's (≤9 years old) acute respiratory symptoms (ARS) in two probabilistic samples representing the MCMA. METHODS: We obtained ARS data from the 2006 and 2012 National Surveys for Health and Nutrition (ENSaNut). Two week average exposure to PM2.5 was assessed for each household with spatial estimates from a hybrid model with satellite measurements of aerosol optical depth (AOD-PM2.5) and also with interpolated PM2.5 measurements from ground stations, from the Mexico City monitoring network (MNW-PM2.5). We used survey-adjusted logistic regressions to analyze the association between PM2.5 estimates and ARS reported on children. RESULTS: A total of 1,005 and 1,233 children were surveyed in 2006 and 2012 representing 3.1 and 3.5 million children, respectively. For the same years and over the periods of study, the estimated prevalence of ARS decreased from 49.4% (95% CI: 44.9,53.9%) to 37.8% (95% CI: 34,41.7%). AOD-PM2.5 and MNW-PM2.5 estimates were associated with significantly higher reports of ARS in children 0-4 years old [OR2006 = 1.29 (95% (CI): 0.99,1.68) and OR2006 = 1.24 (95% CI: 1.08,1.42), respectively]. We observed positive non-significant associations in 2012 in both age groups and in 2006 for children 5-9 years old. No statistically significant differences in health effect estimates of PM2.5 were found comparing AOD-PM2.5 or MNW-PM2.5 for exposure assessment. CONCLUSIONS: Our findings suggest that PM2.5 is a risk factor for the prevalence of ARS in children and expand the growing evidence of the utility of new satellite AOD-based methods for estimating health effects from acute exposure to PM2.5.