The cross-sectional association of parental psychosocial status with children's Body Mass Index z-score and the mediating role of children's energy balance behaviors - the ABCD Study.

OBJECTIVE: Investigate the cross-sectional association between the psychosocial status of mothers and fathers and the BMI z-scores of their 10 to 12-year-old children. Explore whether this association is mediated by children's diet, physical activity, screen time and sleep. Analyze the moderating effect of the educational levels of both the mother and father on the association. DESIGN: In a cross-sectional study design, children's height and weight were measured following a standardized protocol. Parents completed the validated Depression Anxiety and Stress questionnaire, while diet quality, sports participation, time spent in bed and screen time were assessed through child-report using previously validated questions. PARTICIPANTS: The data for this study were obtained from the Amsterdam Born Children and their Development study, involving children aged 10 to 12 years and both of their parents (N = 1315). RESULTS: The majority, 80%, of the parents were highly educated and born in the Netherlands, and 68% of the children had a healthy BMI. Maternal or paternal psychosocial status was not significantly associated with children's BMI z-score (maternal ß -0.0037; 95% CI: -0.008 to 0.0007, paternal ß 0.0028; 95% CI: -0.007 to 0.002). Screen time mediated the association between paternal psychosocial status and children's BMI z-score (ß = 0.010, 95% CI: 0.002; 0.020). Children's diet, physical activity, and sleep did not mediate the association between paternal psychosocial status and children's BMI z-score. Parental educational level was not a moderator. CONCLUSIONS: This research is unique in including four energy balance behaviors and including both mothers and fathers' psychosocial status. Children withfathers experiencing poorer psychosocial status engaged in more screen time which partly explained their higher BMI z-score.

Exploring the associations between early maladaptive schemas and impulsive and compulsive buying tendencies.

The main purpose of this preliminary study was to investigate a potential relationship between early maladaptive schemas (EMSs) and impulsive and compulsive buying tendencies in a sample of young adults (college students). This research adds to the cognitive perspective of consumer behavior that the cognitive schemas putatively associated with early experiences may have a strong impact on impulsive and compulsive buying. Data was obtained from 365 participants in a cross-sectional study design. Participants completed an online survey with the following instruments: Young Schema Questionnaire; Impulsive Buying Tendency Measurement Scale; Richmond Compulsive Buying Scale; and Hospital Anxiety and Depression Scale. Using multiple linear hierarchical regressions, we confirmed that the domain of over vigilance and inhibition schemas was positively associated with impulsive and compulsive buying tendencies, while an opposite association was found for the domain of impaired limits. Being a female was also a predictor of impulsive buying and compulsive buying. The results were discussed in terms of the coping mechanisms to deal with negative emotions, as a way to obtain rewards, or as a way to escape painful self-awareness. Other mechanisms related to the internalization of perfectionist expectations and the propensity to shame were also explored.

Novel Sol-Gel Route to Prepare Eu3+-Doped 80SiO2-20NaGdF4 Oxyfluoride Glass-Ceramic for Photonic Device Applications.

Oxyfluoride glass-ceramics (OxGCs) with the molar composition 80SiO2-20(1.5Eu3+: NaGdF4) were prepared with sol-gel following the "pre-crystallised nanoparticles route" with promising optical results. The preparation of 1.5 mol % Eu3+-doped NaGdF4 nanoparticles, named 1.5Eu3+: NaGdF4, was optimised and characterised using XRD, FTIR and HRTEM. The structural characterisation of 80SiO2-20(1.5Eu3+: NaGdF4) OxGCs prepared from these nanoparticles' suspension was performed by XRD and FTIR revealing the presence of hexagonal and orthorhombic NaGdF4 crystalline phases. The optical properties of both nanoparticles' phases and the related OxGCs were studied by measuring the emission and excitation spectra together with the lifetimes of the 5D0 state. The emission spectra obtained by exciting the Eu3+-O2- charge transfer band showed similar features in both cases corresponding the higher emission intensity to the 5D0→7F2 transition that indicates a non-centrosymmetric site for Eu3+ ions. Moreover, time-resolved fluorescence line-narrowed emission spectra were performed at a low temperature in OxGCs to obtain information about the site symmetry of Eu3+ in this matrix. The results show that this processing method is promising for preparing transparent OxGCs coatings for photonic applications.

Influence of Polyols on the In Vitro Biodegradation and Bioactivity of 58S Bioactive Sol-Gel Coatings on AZ31B Magnesium Alloys.

The mechanical qualities of AZ31B magnesium alloys make them a promising material for biodegradable metallic implants. However, rapid degradation limits the application of these alloys. In the present study, 58S bioactive glasses were synthesized using the sol-gel method and several polyols such as glycerol, ethylene glycol, and polyethylene glycol, were used to improve the sol stability and to control the degradation of AZ31B. The synthesized bioactive sols were dip-coated onto AZ31B substrates and then, characterized by various techniques such as scanning electron microscopy (SEM), X-ray diffraction (XRD) and electrochemical techniques (potentiodynamic and electrochemical impedance spectroscopy), among them. FTIR analysis confirmed the formation of a silica, calcium, and phosphate system and the XRD the amorphous nature of the 58S bioactive coatings obtained by sol-gel. The contact angle measurements confirmed that all the coatings were hydrophilic. The biodegradability response under physiological conditions (Hank's solution) was investigated for all the 58S bioactive glass coatings, observing a different behaviour depending on the polyols incorporated. Thus, for 58S PEG coating, an efficient control of the release of H2 gas was observed, and showing a pH control between 7.6 and 7.8 during all the tests. A marked apatite precipitation was also observed on the surface of the 58S PEG coating after the immersion test. Thus, the 58S PEG sol-gel coating is considered a promising alternative for biodegradable magnesium alloy-based medical implants.

An integrated prognostic model for diffuse large B-cell lymphoma treated with immunochemotherapy.

Diffuse large B-cell lymphoma (DLBCL), the most frequent non-Hodgkin's lymphoma subtype, is characterized by strong biological, morphological, and clinical heterogeneity, but patients are treated with immunochemotherapy in a relatively homogeneous way. Here, we have used a customized NanoString platform to analyze a series of 197 homogeneously treated DLBCL cases. The platform includes the most relevant genes or signatures known to be useful for predicting response to R-CHOP (Rituximab, Cyclophosphamide, Doxorubicin, Vincristine, and Prednisone) in DLBCL cases. We generated a risk score that combines the International Prognostic Index with cell of origin and double expression of MYC/BCL2, and stratified the series into three groups, yielding hazard ratios from 0.15 to 5.49 for overall survival, and from 0.17 to 5.04 for progression-free survival. Group differences were highly significant (p < 0.0001), and the scoring system was applicable to younger patients (<60 years of age) and patients with advanced or localized stages of the disease. Results were validated in an independent dataset from 166 DLBCL patients treated in two distinct clinical trials. This risk score combines clinical and biological data in a model that can be used to integrate biological variables into the prognostic models for DLBCL cases.

Usefulness of a Mobile Application (Mentali) for Anxiety and Depression Screening in Medical Students and Description of the Associated Triggering Factors.

The impact of the COVID-19 health crisis on the mental health of the population requires the implementation of new primary screening strategies of mental health disorders to intervene in a timelier manner, and technology may provide solutions. We aimed to evaluate the usefulness of the mobile app Mentali (version 1.1.2; creators: Jorge Alfonso Solís Galván Sodel Vázquez Reyes, Margarita de la Luz Martínez Fierro, Perla Velasco Elizondo, Idalia Garza Veloz, Alejandro Mauricio González and Claudia Caldera Villalobos, Zacatecas, México) as a primary screening tool for anxiety and depression disorders in medical students and to assess the triggering risk factors. This was a descriptive and longitudinal study and included 155 Mexican medical students. Participants interacted with Mentali for 6 months. The mobile app integrated the Beck anxiety and depression inventories together with a mood module. At the end of the interaction, the students received psychological and psychiatric interventions to confirm their primary diagnoses. Symptoms of moderate/severe anxiety and depression were present in 62.6% and 54.6% of the studied population. When corroborating the diagnoses, Mentali obtained a sensitivity of 100%, 95%, and 43% to classify a mental health disorder, anxiety, and depression, respectively. The most important triggers found were as follows: belonging to a dysfunctional family, being introverted, and having suffered from bullying. The proportion of users with excellent/good mood decreased from 78.7% to 34.4% at the end of the semester, and the proportion of users who claimed to have bad/very bad mood increased from 7.4% to 34.4% at the end of the semester (p < 0.05). Mentali was useful for identifying users with anxiety and/or depression, and as an auxiliary tool to coordinate the provision of specialized interventions, allowing us to increase the proportion of patients who needed psychological care and received it by 30%. The efficacy of Mentali in identifying activities through time with an impact on the mood and mental health of the users was confirmed. Our results support the use of Mentali for the primary screening of mental health disorders in young adults, including medical students.

Plasmacytoid Dendritic Cell Dermatosis Associated to Myeloproliferative/Myelodysplastic Neoplasms.

Cutaneous lesions in the setting of myeloproliferative neoplasms and myelodysplastic syndromes are poorly understood. We report 6 patients with pruritic papular eruptions composed of mature T-lymphocytes with large clusters of CD123-positive cells. Double immunohistochemical studies demonstrated a lack of myeloid cell nuclear differentiation antigen in the CD123-positive cells, which expressed SPIB, confirming that they were mature plasmacytoid dendritic cells. Four patients were diagnosed with chronic myelomonocytic leukemia and 2 with myelodysplastic syndromes (AREB-I and myelodysplastic syndromes with 5q deletion, respectively). All patients had a long history of hematological alterations, mainly thrombocytopenia, preceding the cutaneous disorder. Nevertheless, the skin lesions developed in all cases coincidentally with either progression or full-establishment of their hematological disease. Most cutaneous lesions disappeared spontaneously or after corticosteroid treatment. Molecular studies performed in both bone marrow and cutaneous lesions in 2 patients demonstrated the same mutational profile, confirming the specific, neoplastic nature of these mature plasmacytoid dendritic cells-composed cutaneous lesions.

Electrochemical Characterization of Polymeric Coatings for Corrosion Protection: A Review of Advances and Perspectives.

The development of anti-corrosion polymeric coatings has grown exponentially in the fields of material science, chemistry, engineering, and nanotechnology during the last century and has prompted the evolution of efficient characterization techniques. Nowadays, polymeric coatings represent a well-established protection system that provides a barrier between a metallic substrate and the environment. However, the increase in complexity and functionality of these coatings requires high-precision techniques capable of predicting failures and providing smart protection. This review summarizes the state of the art for the main electrochemical techniques, emphasizing devices that track the anti-corrosion properties of polymeric coatings from the macroscale to the nanoscale. An overview of the advances in accelerated corrosion testing and the electrochemical characterization of coatings is explored, including insights into their advantages and limitations. In addition, the challenges and potential applications of the theoretical approaches are summarized based on current knowledge. Finally, this work provides the reader with the trends and challenges of designing future technologies and models capable of tracking corrosion and predicting failures.

Hybrid Epoxy-Alkyl Sol-Gel Coatings Reinforced with SiO2 Nanoparticles for Corrosion Protection of Anodized AZ31B Mg Alloy.

AZ31B Mg alloys were anodized at different potentials using an alkaline electrolyte. Then, an epoxy-alkyl silane sol reinforced with SiO2 nanoparticles was prepared by sol-gel and deposited on top of the optimized anodic layers. 1-Methyl imidazole was added to the sol to promote a partial epoxy ring aperture and improve the condensation degree of the inorganic network. The results showed the curing temperature affects the inorganic polycondensation of the organic-inorganic network; this effect was analyzed by 29Si and 13C solid-state NMR spectroscopy. Electrochemical impedance spectroscopy in 3.5 wt% NaCl solution revealed that the corrosion resistance is enhanced by the anodized process obtained for Mg alloy anodized at 100 V/2 min. However, a quick deterioration of the oxide film with immersion time was evident, showing a reduction of the protection efficiency (ηE%) of 76.5% after 16 h/immersion. The deposition of an epoxy-alkyl coating improved the ηE% up to 98.6% after 72 h/immersion. The proposed hybrid coating used for post-sealing the porous anodized Mg alloy looks like a good alternative protective barrier to control the corrosion process of Mg alloys. A suitable compromise between cross-linking network and curing temperature is necessary to obtain a good barrier coating.

Evaluation of respiratory anatomical-functional sequelae in patients who recovered from COVID-19.

INTRODUCTION: Coronavirus disease 19 (COVID-19) has been a global public health emergency, with 209.89 million cases of infection with SARS-CoV-2 recorded, resulting in 4,401,675 deaths. After recuperation, it is probable that COVID-19 patients have sequelae of the disease. This study aimed to evaluate the respiratory anatomical-functional sequelae in Mexican patients who recovered from COVID-19. METHODOLOGY: This study included twenty-four patients who recovered from COVID-19 and eight non-infected patients (controls). Participants were screened for SARS-CoV-2 and the presence of IgM/IgG antibodies. Pulmonary function and lung anatomical abnormalities were evaluated by spirometry and computerized tomography. RESULTS: A total of 45.8% of the patients had pulmonary function with obstructive patterns: 70.8% of recovered cases had COVID-19 Reporting and Data System (CO-RADS) 1, 20.8% CO-RADS 3 and 16.7% CO-RADS 4. A total of 35.3% of patients with CO-RADS 1 also showed bilateral nodal growth; 70.8% of patients tested positive for IgG and 8.4% for IgG/IgM, and 20.8% tested negative for both antibodies. CONCLUSIONS: There were respiratory anatomical and functional sequelae in Mexican patients who recovered from COVID-19, with a high occurrence of pulmonary obstructive patterns in the study population. These observations indicate the importance of the routine evaluation of sequelae in Mexican patients who recovered from COVID-19 and the need for strict follow-up to improve the quality of life of these patients.

El acoso sexual en la universidad: la visión del alumnado / Sexual harassment in the university: The students' visión

Resumen Introducción/objetivo: El acoso sexual es una de las violencias que más debe preocupar a la comunidad educativa, por ello, el objetivo de este estudio consiste en analizar los conocimientos, las percepciones y las actitudes de los y las estudiantes universitarios hacia el acoso sexual. Método: Desde un enfoque cualitativo se han realizado diez entrevistas individuales a estudiantes (seis alumnas y cuatro alumnos) y ocho grupos de discusión heterogéneos formados por 67 estudiantes. Todos pertenecientes a una universidad de carácter público situada en el noroeste de España. Resultados: El alumnado tiene pocos conocimientos sobre el acoso sexual y, además, no recibe formación que le otorgue las herramientas que le permitan identificarlo y combatirlo. Asimismo, la mayoría de los/as participantes expresa que el acoso sexual es habitual en el entorno académico, pero que está invisibilizado. A través de sus propias palabras se identifica que perciben actitudes permisivas hacia el acoso sexual por parte de los/as docentes y de la universidad, considerando que no hay una verdadera implicación para intervenir en las situaciones de acoso. Conclusiones: Es necesario que la universidad se comprometa a implementar estrategias de prevención e intervención, con el propósito de identificar, sancionar y erradicar todas y cada una de las formas de violencia, incluido el acoso sexual.

Abstract Introduction/objective: Sexual harassment is one of the types of violence that should most concern the educational community, consequently, the objective of this study is to analyze the knowledge, perceptions and attitudes of university students towards sexual harassment. Method: From a qualitative approach, ten individual interviews were carried out with students (six female students and four male students) and eight heterogeneous discussion groups made up of 67 students. All of them belong to a public university located in the northwest of Spain. Results: The students have little knowledge about sexual harassment and, in addition, they do not receive training that gives them the tools that allow them to identify and combat it. Likewise, most of the participants express that sexual harassment is common in the academic environment, but that it is invisible. Through their own words, it is identified that they perceive permissive attitudes towards sexual harassment on the part of teachers and the university, considering that there is no real implication to intervene in harassment situations. Conclusions: It is necessary for the university to commit to implement prevention and intervention strategies, in order to identify, punish and eradicate each and every one of the forms of violence, including sexual harassment.

Experiences of Female Breast Cancer Survivors Concerning Their Return to Work in Spain.

The objective of this study was to analyze the experiences of returning to work of women who had overcome breast cancer, identifying its physical and psychological consequences, the process they underwent, their motivations, and difficulties. A total of 19 female breast cancer survivors, with an age range of 30 to 57 years, participated in two focus groups. A semi-structured script was prepared about their experiences of returning to work. The results indicated that survivors' self-perception was weakened by the physical and psychological consequences of the treatment of the disease; economic difficulties were one of the main reasons for going back to work; lastly, returning to work was a difficult process, mainly because of their physical/psychological limitations, the scarcity of job adaptation measures, and the limited support of the various public administrations. In addition, most of the women had to cope with seeking a new job without any guidance or job training. Significant difficulties related to the maintenance and return to work of female breast cancer survivors have been revealed. Findings highlighted the need to provide more and better information and guidance to cancer patients concerning their return to work or the search for a new job.

Simultaneous Determination of Refractive Index and Thickness of Submicron Optical Polymer Films from Transmission Spectra.

High-transparency polymers, called optical polymers (OPs), are used in many thin-film devices, for which the knowledge of film thickness (h) and refractive index (n) is generally required. Spectrophotometry is a cost-effective, simple and fast non-destructive method often used to determine these parameters simultaneously, but its application is limited to films where h > 500 nm. Here, a simple spectrophotometric method is reported to obtain simultaneously the n and h of a sub-micron OP film (down to values of a few tenths of a nm) from its transmission spectrum. The method is valid for any OP where the n dispersion curve follows a two-coefficient Cauchy function and complies with a certain equation involving n at two different wavelengths. Remarkably, such an equation is determined through the analysis of n data for a wide set of commercial OPs, and its general validity is demonstrated. Films of various OPs (pristine or doped with fluorescent compounds), typically used in applications such as thin-film organic lasers, are prepared, and n and h are simultaneously determined with the proposed procedure. The success of the method is confirmed with variable-angle spectroscopic ellipsometry.

Validación de la Escala de Comportamientos de Sexting en Adolescentes: Prevalencia y Consecuencias Asociadas / Validation of the Sexting Behavior Scale in adolescents: Prevalence and associated consequences

El objetivo de este estudio fue triple: validar una versión de la Escala de Comportamientos de Sexting en adolescentes, evaluar la prevalencia de dichos comportamientos y determinar sus consecuencias asociadas. Participaron un total de 1,271 estudiantes(50.8% chicas), con una media de edad de 15.6 (DT = 1.13). Los resultados muestran a través del análisis factorial confirmatorio un buen ajuste por el modelo bidimensional formado por ítems que se agrupan en el envío de fotos y/o vídeos (α = .83) y el envío de mensajes de texto con contenido erótico/sexual (α = .83). Se ha identificado que el 52.8% de los adolescentes han llevado a cabo conductas de sexting, siendo mayor el envío de textos erótico/sexuales (91.7%) que de fotos y/o vídeos (57.8%), y que los chicos son los que más contenidos envían. Además, el 11.6% de los adolescentes fueron obligados a enviar contenido de sexting y el 5.5% fueron chantajeados. (AU)

The objective of this study was threefold: to validate a version of the Sexting Behavior Scale in adolescents, to assess the prevalence of sexting behaviors, and to determine their associated consequences. A total of 1,271 (50.8% girls) students participated, with a mean age of 15.6 (SD = 1.13). The results show through the confirmatory factor analysis a good fit for the two-dimensional model consisting of items that are grouped into sending photos and/or vídeos (α = .83) and sending text messages with erotic/sexual content (α = .83); 52.8% of adolescents have been identified to carry out sexting behaviors, with texts (91.7%) being more erotic/sexual than photos and/or vídeos (57.8%), and boys the ones that most content send. In addition, 11.6% of adolescents were forced to send sexting content and 5.5% of them were blackmailed. (AU)

Population-Based COVID-19 Screening in Mexico: Assessment of Symptoms and Their Weighting in Predicting SARS-CoV-2 Infection.

Background and Objectives: Sentinel surveillance in the early stage of the COVID-19 pandemic in Mexico represented a significant cost reduction and was useful in estimating the population infected with SARS-CoV-2. However, it also implied that many patients were not screened and therefore had no accurate diagnosis. In this study, we carried out a population-based SARS-CoV-2 screening in Mexico to evaluate the COVID-19-related symptoms and their weighting in predicting SARS-CoV-2 infection. We also discuss this data in the context of the operational definition of suspected cases of COVID-19 established by the Mexican Health Authority's consensus. Materials and Methods: One thousand two hundred seventy-nine subjects were included. They were screened for SARS-CoV-2 using RT-PCR. The weighting of COVID-19 symptoms in predicting SARS-CoV-2 infection was evaluated statistically. Results: Three hundred and twenty-five patients were positive for SARS-CoV-2 and 954 were negative. Fever, asthenia, dysgeusia, and oxygen saturation predicted SARS-CoV-2 infection (odds ratios ranged from 1.74 to 4.98; p < 0.05). The percentage of asymptomatic COVID-19 patients was 36% and only 38.15% met the Mexican operational definition. Cq-values for the gene N of SARS-CoV-2 were significantly higher in asymptomatic subjects than in the groups of COVID-19 patients with neurological, respiratory, and/or musculoskeletal manifestations (p < 0.05). Conclusions: Dysgeusia, fever, and asthenia increased the odds of a positive result for COVID-19 1.74-4.98-fold among the study population. Patients with neurological, respiratory, and/or musculoskeletal manifestations had higher viral loads at COVID-19 diagnosis than those observed in asymptomatic patients. A high percentage of the participants in the study (61.85%) did not meet the operational definition for a suspected case of COVID-19 established by the Mexican Health Authority's consensus, representing a high percentage of the population that could have remained without a COVID-19 diagnosis, so becoming a potential source of virus spread.

Sex Education in the Spotlight: What Is Working? Systematic Review.

Adolescence, a period of physical, social, cognitive and emotional development, represents a target population for sexual health promotion and education when it comes to achieving the 2030 Agenda goals for sustainable and equitable societies. The aim of this study is to provide an overview of what is known about the dissemination and effectiveness of sex education programs and thereby to inform better public policy making in this area. Methodology: We carried out a systematic review based on international scientific literature, in which only peer-reviewed papers were included. To identify reviews, we carried out an electronic search of the Cochrane Database Reviews, ERIC, Web of Science, PubMed, Medline, Scopus and PsycINFO. This paper provides a narrative review of reviews of the literature from 2015 to 2020. Results: 20 reviews met the inclusion criteria (10 in school settings, 9 using digital platforms and 1 blended learning program): they focused mainly on reducing risk behaviors (e.g., VIH/STIs and unwanted pregnancies), whilst obviating themes such as desire and pleasure, which were not included in outcome evaluations. The reviews with the lowest risk of bias are those carried out in school settings and are the ones that most question the effectiveness of sex education programs. Whilst the reviews of digital platforms and blended learning show greater effectiveness in terms of promoting sexual and reproductive health in adolescents (ASRH), they nevertheless also include greater risks of bias. Conclusion: A more rigorous assessment of the effectiveness of sexual education programs is necessary, especially regarding the opportunities offered by new technologies, which may lead to more cost-effective interventions than with in-person programs. Moreover, blended learning programs offer a promising way forward, as they combine the best of face-to-face and digital interventions, and may provide an excellent tool in the new context of the COVID-19 pandemic.

Intimate Partner Cyberstalking, Sexism, Pornography, and Sexting in Adolescents: New Challenges for Sex Education.

BACKGROUND: Within the context of the widespread use of technologies by adolescents, the objectives of this study were to identify the perpetrators of intimate partner cyberstalking (IPCS) in adolescents; to analyze the relationship between IPCS and gender, age, sexting behaviors, pornography consumption, and ambivalent sexism; and to investigate the influence of the study variables as predictors of IPCS and determine their moderating role. METHODS: Participants were 993 Spanish students of Secondary Education, 535 girls and 458 boys with mean age 15.75 (SD = 1.47). Of the total sample, 70.3% (n = 696) had or had had a partner. RESULTS: Boys perform more sexting, consume more pornographic content, and have more hostile and benevolent sexist attitudes than girls. However, girls perpetrate more IPCS than boys. The results of the hierarchical multiple regression indicate that hostile sexism is a predictor of IPCS, as well as the combined effect of Gender × Pornography and Benevolent Sexism × Sexting. CONCLUSIONS: it is essential to implement sexual affective education programs in schools in which Information and Communication Technologies (ICT) are incorporated so that boys and girls can experience their relationships, both offline and online, in an egalitarian and violence-free way.

Preventing Violence toward Sexual and Cultural Diversity: The Role of a Queering Sex Education.

BACKGROUND: The prevailing sex education (SE) model falls within a neoliberal prevention- and risk-oriented paradigm. This model ignores the identity dimension of sexuality, is based on the cis-heteronormative and ethnocentric matrix and stigmatizes sexual and cultural diversity; this has significant consequences for sexually and culturally diverse adolescents and youth. In this study, we explored the potential of the identity dimension of SE to prevent violence toward sexual and cultural diversity. Specifically, our objective was to identify the influence of heteronormative and ethnocentric variables on violence exerted against trans* and gender-diverse people and people from minority ethnic groups. METHODS: A total of 623 Spanish adolescents with a mean age of 14.73 years and an age range of 13 to 18 years participated in the study. Students completed a questionnaire that included measures regarding violence toward sexual and cultural diversity, gender stereotypes, sexist attitudes and rejection of sexual and cultural diversity. We performed two hierarchical linear regression models. RESULTS: Students who exerted the highest amount of violence toward trans* and gender-diverse people were those who showed the lowest endorsement of expressive traits and the highest endorsement of instrumental traits as well as the highest level of hostile sexist, heteronormative and hostile racist attitudes (the five predictor variables explained 29.1% of the variance of gender-bashing). These same variables-except expressiveness-and benevolent sexism explained 46.1% of the variance of rejection of minority ethnic groups. CONCLUSIONS: There is a need for a comprehensive, intercultural, critical and queer SE aimed at transforming the classroom into a space that promotes social transformation through an educational practice that is transgressive and critical of cis-heteronormativity and normative ethnocentrism.

Prevalencia y determinantes de la lactancia materna: estudio Zorrotzaurre / Prevalence and determinants of breastfeeding: the Zorrotzaurre study

INTRODUCCIÓN Y OBJETIVOS: la lactancia materna (LM) es un método de alimentación infantil que aporta múltiples beneficios para la salud de los lactantes y las madres. Este estudio pretende determinar la prevalencia de la LM durante el primer año de vida de los hijos/as de una serie de mujeres que dan a luz en una clínica privada de Bizkaia, e identificar los determinantes facilitadores y los motivos de abandono. MÉTODO: estudio observacional, descriptivo, longitudinal y prospectivo de una muestra aleatoria de 453 recién nacidos (RN), reclutada entre 2016 y 2017. RESULTADOS: en total, 366 mujeres aceptaron participar en todas las fases de estudio. La prevalencia de la lactancia materna exclusiva (LME) fue del 51,7 % al inicio, del 77,1 % al alta y del 21,6 % al sexto mes; y la de la LM, del 87,1 % al inicio, del 48,4 % al sexto mes y del 20,6 % al año. Los factores facilitadores de la LME fueron: al inicio, no utilizar nido ni sacaleches; 15 días satisfacción con la LM y no utilizar chupete ni sacaleches; 4 meses satisfacción con la LM; 6 meses acudir a Grupos de Apoyo a la Lactancia (GAL) y no introducir alimentación complementaria (AC); los de la LM al año, acudir a GAL. Los principales motivos de abandono fueron: la iniciativa propia, la incorporación al trabajo y la escasa ganancia de peso del RN. CONCLUSIONES: uno de cada 5 RN recibieron LME hasta los 6 meses y LM hasta el año. Sería necesario promover estrategias que favorezcan el amamantamiento, como: suprimir el nido, desaconsejar el sacaleches y el chupete al inicio, iniciar la AC a partir del sexto mes y organizar GAL durante el primer año

INTRODUCTION AND OBJECTIVES: breastfeeding (BF) is a feeding method that provides multiple benefits for the health of infants and their mothers. This study aimed to determine the prevalence of BF during the first year of life of children of women who gave birth in a private clinic in Biscay, Basque Country, Spain, and to identify the facilitating determinants and reasons for abandonment. METHOD: an observational, descriptive, longitudinal and prospective study in a random sample of 453 newborns (NBs) recruited between 2016 and 2017. RESULTS: in all, 366 women agreed to participate in all the study phases. The prevalence of exclusive breastfeeding (EBF) was 51.7 % at baseline, 77.1 % at discharge, and 21.6 % after sixth months; and that of BF, 87.1 % at the beginning, 48.4 % at month six, and 20.6 % at one year. The facilitating factors of EBF were: at the beginning, not using a nest or breast pump; 15 days satisfaction with LM and not using a pacifier or breast pump; 4 months satisfaction with LM; 6 months attending Lactation Support Groups (GAL) and not introducing complementary feeding (CA); and those of LM at 1 year, attending GAL. The main reasons for abandonment were: own initiative, incorporation to work, and little weight gain by the NB. CONCLUSIONS: one in 5 newborns received EBF up to 6 months and BF up to one year. It would be necessary to promote strategies that favor breastfeeding, such as eliminating the nest, advising against breast pumps and pacifiers at the beginning, starting CA from the sixth month, and organizing GALs during the first year

The role of close contacts of COVID-19 patients in the SARS-CoV-2 transmission: an emphasis on the percentage of nonevaluated positivity in Mexico.

OBJECTIVES: To determine the percentage of positivity of close contacts of coronavirus disease 19 (COVID-19) patients to depict the importance of asymptomatic infections in the patient-to-patient transmission of COVID-19. METHODS: One hundred subjects were included. Nineteen index COVID-19 cases and 81 traced close contacts were screened for coronavirus 2 of severe acute respiratory syndrome (SARS-CoV-2) using real-time reverse transcription-polymerase chain reaction. Immunoglobulin M and G against SARS-CoV-2 were evaluated by rapid test. RESULTS: Thirty-four (42%) contacts in the study were positive for SARS-CoV-2. Twenty-three (67.6%) manifested less than 2 respiratory symptoms, and 5 (14.7%) remained asymptomatic. The average of positive contacts by index COVID-19 case (R0) was 4.3 and the mean of time of positive COVID-19 test at sampling time was 18.9 days. Positive antibody test against SARS-CoV-2 was observed in 16% of the participants. CONCLUSION: The proportion of close contacts of COVID-19 patients infected with SARS-CoV-2 (42%) and with less than 2 or with no respiratory symptoms (82.4%) was high in the study population. A low proportion of COVID-19 patients had a positive test for antibodies against SARS-CoV-2. The screening for SARS-CoV-2 in close contacts of COVID-19 positive patients should be encouraged to avoid spreading the infection and the expansion of the disease.