GSK3α, not GSK3ß, drives hippocampal NMDAR-dependent LTD via tau-mediated spine anchoring.

Glycogen synthase kinase-3 (GSK3) is an important signalling protein in the brain and modulates different forms of synaptic plasticity. Neuronal functions of GSK3 are typically attributed to one of its two isoforms, GSK3ß, simply because of its prevalent expression in the brain. Consequently, the importance of isoform-specific functions of GSK3 in synaptic plasticity has not been fully explored. We now directly address this question for NMDA receptor-dependent long-term depression (LTD) in the hippocampus. Here, we specifically target the GSK3 isoforms with shRNA knock-down in mouse hippocampus and with novel isoform-selective drugs to dissect their roles in LTD. Using electrophysiological and live imaging approaches, we find that GSK3α, but not GSK3ß, is required for LTD. The specific engagement of GSK3α occurs via its transient anchoring in dendritic spines during LTD induction. We find that the major GSK3 substrate, the microtubule-binding protein tau, is required for this spine anchoring of GSK3α and mediates GSK3α-induced LTD. These results link GSK3α and tau in a common mechanism for synaptic depression and rule out a major role for GSK3ß in this process.

Socioeconomic inequalities in the use of medical consultation services in Peru, 2019.

BACKGROUND: Socioeconomic inequalities in the population influence access to health services and constitute a challenge for health systems, especially in low- and middle-income countries. In Peru, an increase in the use of medical services has been estimated; however, the study of inequalities in the use of medical services is limited. Therefore, the objective of this research was to analyze and decompose socioeconomic inequalities in the use of medical consultation services in Peru. METHODS: A cross-sectional analytical study was conducted using data from the National Household Survey 2019. The outcome variable was the use of a consultation attended by a physician in the last 4 weeks in persons who presented symptom or discomfort, illness, relapse of chronic disease and/or accident. Concentration curves and Erreygers concentration indices were used to determine socioeconomic inequalities, and a generalized linear regression model was used for the decomposition analysis of inequalities. RESULTS: A total of 52,715 persons were included in the study. The frequency of medical consultation was 25.4% (95% confidence interval: 24.8 - 26.1%). In the inequality analysis, it was found that the use of medical consultations was concentrated among the wealthiest individuals. The main contributing factors were having another type of health insurance (social health insurance [EsSalud], private health insurance, health provider, the Armed Forces, and the Police), residing in an urban area, belonging to the richest wealth quintile, having a chronic disease, and residing in the highlands of Peru. CONCLUSIONS: Based on our findings, government institutions seeking to achieve equitable access to health services should consider the main factors contributing to this inequality in the formulation of strategies to lessen the negative impact of inadequate disease control in the population.

Measuring Socioeconomic Inequalities in HIV Testing During Antenatal Care: A Peruvian National Survey.

Although several Latin American countries have 70% antenatal care coverage, the proportion of human immunodeficiency virus (HIV) testing of Peruvian pregnant women and the socioeconomic inequalities of this preventive measure are unknown. This study aimed to determine socioeconomic inequalities and quantify the contribution of contextual and compositional factors on HIV testing during prenatal care in Peru. A cross-sectional study of the 2021 Demographic and Family Health Survey data was conducted. The outcome variable was HIV testing of pregnant women during prenatal care. An analysis of inequalities was performed including the determination of concentration curves and a decomposition analysis of concentration indices. Of a total of 17521 women aged 15 to 49 years, 91.4% had been tested for HIV during prenatal care. The concentration curves showed that prenatal HIV testing was concentrated among richer women, while the decomposition analysis determined that the main contributors to inequality were having a higher education, residing in an urban area, and in the highlands, belonging to the wealthy quintile, and being exposed to television and newspapers. Strategies focused on improving access, promotion and restructuring of prevention of mother-to-child transmission measures should be prioritized.

New Mechanisms to Prevent Heart Failure with Preserved Ejection Fraction Using Glucagon-like Peptide-1 Receptor Agonism (GLP-1 RA) in Metabolic Syndrome and in Type 2 Diabetes: A Review.

This review examines the impact of obesity on the pathophysiology of heart failure with preserved ejection fraction (HFpEF) and focuses on novel mechanisms for HFpEF prevention using a glucagon-like peptide-1 receptor agonism (GLP-1 RA). Obesity can lead to HFpEF through various mechanisms, including low-grade systemic inflammation, adipocyte dysfunction, accumulation of visceral adipose tissue, and increased pericardial/epicardial adipose tissue (contributing to an increase in myocardial fat content and interstitial fibrosis). Glucagon-like peptide 1 (GLP-1) is an incretin hormone that is released from the enteroendocrine L-cells in the gut. GLP-1 reduces blood glucose levels by stimulating insulin synthesis, suppressing islet α-cell function, and promoting the proliferation and differentiation of ß-cells. GLP-1 regulates gastric emptying and appetite, and GLP-1 RA is currently indicated for treating type 2 diabetes (T2D), obesity, and metabolic syndrome (MS). Recent evidence indicates that GLP-1 RA may play a significant role in preventing HFpEF in patients with obesity, MS, or obese T2D. This effect may be due to activating cardioprotective mechanisms (the endogenous counter-regulatory renin angiotensin system and the AMPK/mTOR pathway) and by inhibiting deleterious remodeling mechanisms (the PKA/RhoA/ROCK pathway, aldosterone levels, and microinflammation). However, there is still a need for further research to validate the impact of these mechanisms on humans.

Initiation and long-term instability of the East Antarctic Ice Sheet.

Antarctica's continental-scale ice sheets have evolved over the past 50 million years. However, the dearth of ice-proximal geological records limits our understanding of past East Antarctic Ice Sheet (EAIS) behaviour and thus our ability to evaluate its response to ongoing environmental change. The EAIS is marine-terminating and grounded below sea level within the Aurora subglacial basin, indicating that this catchment, which drains ice to the Sabrina Coast, may be sensitive to climate perturbations. Here we show, using marine geological and geophysical data from the continental shelf seaward of the Aurora subglacial basin, that marine-terminating glaciers existed at the Sabrina Coast by the early to middle Eocene epoch. This finding implies the existence of substantial ice volume in the Aurora subglacial basin before continental-scale ice sheets were established about 34 million years ago. Subsequently, ice advanced across and retreated from the Sabrina Coast continental shelf at least 11 times during the Oligocene and Miocene epochs. Tunnel valleys associated with half of these glaciations indicate that a surface-meltwater-rich sub-polar glacial system existed under climate conditions similar to those anticipated with continued anthropogenic warming. Cooling since the late Miocene resulted in an expanded polar EAIS and a limited glacial response to Pliocene warmth in the Aurora subglacial basin catchment. Geological records from the Sabrina Coast shelf indicate that, in addition to ocean temperature, atmospheric temperature and surface-derived meltwater influenced East Antarctic ice mass balance under warmer-than-present climate conditions. Our results imply a dynamic EAIS response with continued anthropogenic warming and suggest that the EAIS contribution to future global sea-level projections may be under-estimated.

Association Between the Autonomy of Peruvian Women and the Choice of the Place of Delivery: Analysis of a National Survey, 2019.

OBJECTIVES: To determine the association between Peruvian women's autonomy and place of delivery. METHODS: An analytical cross-sectional study of secondary data from the Demographic and Family Health Survey 2019 was carried out. The dependent variable was institutionalized childbirth, and the independent variable was women's autonomy. Likewise, the association between women's autonomy and institutionalized childbirth was evaluated using Poisson family generalized linear models with logarithmic link function, and crude (PR) and adjusted prevalence ratios (aPR) with their respective 95% confidence interval (CI) were estimated. RESULTS: The analysis included 15,334 women aged 15-49 years. It was found that a high proportion of women had a low level of autonomy (42.6%; 95% CI: 41.5-43.7), while 92.1% (95% CI: 91.3-92.9) had institutionalized childbirth. Moderate (PR: 1.10; 95% CI: 1.08-1.12) and high (PR: 1.13; 95% CI: 1.12-1.15) levels of women's autonomy were found to be associated with institutionalized childbirth, and the same association was found in the adjusted analysis. CONCLUSION: Being a woman with a higher level of autonomy was related to a higher prevalence of institutionalized childbirth. Therefore, as decision-making is a multifactorial characteristic, it is necessary to study in depth the determinants of non-institutionalized childbirth in women with less autonomy.

Results of Transfibular Total Ankle Arthroplasty. A Series of 50 Implants.

Total ankle arthroplasty has become popular in the last few years. The lateral transfibular approach is an alternative to the traditional anterior approach. The purpose of this study was to evaluate our 50 first and consecutive clinical and radiological outcomes of transfibular total ankle replacements (Trabecular Metal Total AnkleR Zimmer Biomet, Warsaw, IN) with a follow-up of at least 3 years. This retrospective study included 50 patients. The main indication was post-traumatic osteoarthritis (n = 41). The mean age was 59 (range = 39-81). All patients were followed for at least 36 months postoperatively. Patients were assessed with the American Orthopaedic Foot & Ankle Society (AOFAS) Ankle Hindfoot Score and Visual analog scale (VAS) preoperatively and postoperatively. Range of motion and radiological measures were assessed as well. Postoperatively, patients demonstrated statistically significant improvement in the AOFAS score from 32 (range = 14-46) to 80 (range = 60-100) (p < .01) and VAS from 7.8 (range = 6.1-9.7) to 1.3 (range = 0-6) (p < .01). The average total range of motion increased significantly from 19.8° to 29.2° of plantarflexion and 6.8° to 13.5° of dorsiflexion. Alignment measured by alpha, beta, and gamma angles was satisfactorily achieved. No patient demonstrated any radiographic evidence of tibial or talar lucency at the final follow-up. Five patients (10%) experienced delayed wound healing. One patient (2%) developed a postoperative prosthetic infection. One patient (2%) developed fibular pseudoarthrosis and 2 patients (4%) suffered impingement. Two patients (4%) needed surgery for symptomatic fibular hardware. This study found excellent clinical and radiological results of transfibular total ankle replacement. This is a safe and effective option that allows the correction of sagittal and coronal malalignment.

Computational basis of decision-making impairment in multiple sclerosis.

BACKGROUND: Multiple sclerosis (MS) is commonly associated with decision-making, neurocognitive impairments, and mood and motivational symptoms. However, their relationship may be obscured by traditional scoring methods. OBJECTIVES: To study the computational basis underlying decision-making impairments in MS and their interaction with neurocognitive and neuropsychiatric measures. METHODS: Twenty-nine MS patients and 26 matched control subjects completed a computer version of the Iowa Gambling Task (IGT). Participants underwent neurocognitive evaluation using an expanded version of the Brief Repeatable Battery. Hierarchical Bayesian Analysis was used to estimate three established computational models to compare parameters between groups. RESULTS: Patients showed increased learning rate and reduced loss-aversion during decision-making relative to control subjects. These alterations were associated with: (1) reduced net gains in the IGT; (2) processing speed, executive functioning and memory impairments; and (3) higher levels of depression and current apathy. CONCLUSION: Decision-making deficits in MS patients could be described by the interplay between latent computational processes, neurocognitive impairments, and mood/motivational symptoms.

Physical abuse in childhood and intimate partner violence in Peruvian women: A population-based survey, 2019.

Intimate partner violence (IPV) is a global health problem and a violation of individual rights. The objective of this study was to assess the association between physical child abuse and current IPV in women of childbearing age in Peru. An analytical cross-sectional analysis of the data from the 2019 Demographic and Family Health Survey was carried out. IPV was constituted by emotional, physical and sexual violence, while physical child abuse was constructed from variables related to physical punishment that women of childbearing age experienced during childhood. Poisson's family generalized linear models were used for the crude and adjusted analyses to determine the association between physical child abuse and IPV. Data from a total of 21,518 women of childbearing age were included. 67.1% of women experienced physical abuse in childhood, while 57.7% experienced intimate partner violence. After adjusting for the characteristics of the woman, the partner or husband, marriage or relationship and the home, it was observed that having experienced physical abuse during childhood increased the probability of experiencing emotional (adjusted prevalence ratio [aPR] 1.15; 95% confidence interval [CI]: 1.09-1.21), physical (aPR 1.33; 95% CI: 1.20-1.47), sexual (aPR 1.57; 95% CI: 1.26-1.96) and any type of violence (aPR 1.15; 95% CI: 1.09-1.21) in adulthood. In conclusion, physical abuse during childhood is a public health issue in Peru. This study shows that women aged 15 to 49 who experienced physical abuse in childhood are more likely to experience intimate partner violence.

Prevalence of hepatitis C virus infection in patients with end-stage renal disease in Latin America and the Caribbean: a systematic review and meta-analysis.

AIM: To estimate the prevalence of hepatitis C virus (HCV) infection in patients with end-stage renal disease (ESRD) undergoing hemodialysis in Latin America and the Caribbean (LAC). MATERIALS AND METHODS: Observational studies published in Spanish, Portuguese, and English language by November 25, 2021, in PubMed, Embase, Web of Science, Scopus, SciELO, and LILACS were selected by two reviewers according to predefined eligibility criteria. Study quality was assessed using the US National Heart, Lung and Blood Institute tool for observational cohort and cross-sectional studies. A meta-analysis of proportions was performed using a random-effects model based on the DerSimonian and Laird method, using R. PROSPERO N°: CRD42018107403. RESULTS: A total of 20 studies were included in the narrative synthesis (15 from Brazil, two from Cuba, two from Argentina, and one from Peru). Only 17 studies were included in the meta-analysis (13 from Brazil, two from Argentina, one from Cuba, and one from Peru). The overall prevalence of HCV in ESRD patients undergoing hemodialysis in LAC was 11.3% (95% confidence interval [CI]: 8.9% - 13.9%; I2: 99 %). In Brazil and Argentina, the prevalence was 6% and 26.1%, respectively. Prevalence after excluding poor-quality studies was 10.7%. CONCLUSION: The prevalence of HCV in ESRD patients undergoing hemodialysis in LAC was 11.3%. The implementation of infection control measures in hemodialysis centers in LAC is required. It is also necessary to increase the number of studies on the subject in the ESRD population in most LAC countries.

Socio-economic inequalities in the consumption of fruits and vegetables in Peru between 2014 and 2019.

OBJECTIVE: To estimate the prevalence and socio-economic inequalities in adequate consumption of fruits and vegetables in Peru between 2014 and 2019. DESIGN: Analytical cross-sectional study. The outcome variable was adequate consumption of fruits and vegetables, defined as the consumption of five or more servings of fruits and vegetables per d (yes/no). We used concentration curves and Erreygers concentration index to describe socio-economic inequalities and a microeconometric approach to determine the contribution of each variable to inequality. SETTING: Peru. PARTICIPANTS: Data from Peruvians aged 18 years or older collected by the Demographic and Family Health Survey. RESULTS: The prevalence of adequate fruit and vegetable consumption did not change between 2014 (10·7 %; 95 % CI (10·0, 11·4)) and 2019 (11 %; 95 % CI (10·4, 11·7)). We found socio-economic inequalities in the adequate consumption of fruits and vegetables, with wealthier individuals having a higher prevalence of adequate consumption compared to poorer individuals in 2014 (19·2 % v. 3·5 %) and 2019 (18·6 % v. 4·7 %). The decomposition analysis found that education, urban areas and being wealthy were the main factors associated with socio-economic inequality in adequate fruit and vegetable consumption, being structural problems of society. CONCLUSION: Despite the current regulations on healthy eating in Peru, adequate consumption of fruits and vegetables remains low, and there are socio-economic inequalities between the poorest and wealthiest individuals. Our findings suggest that more efforts are needed to increase the intake and assess the disparities in adequate fruit and vegetable consumption.

Factors associated with the consumption of table salt with inadequate iodine concentrations: a population analysis at a Peruvian household level.

OBJECTIVE: Iodine deficiency is a public health problem, especially in Peru, where it affects women of childbearing age and school-age children. The objective of the study was to conduct a household-level analysis of the factors associated with the consumption of table salt with inadequate amounts of iodine in Peru. DESIGN: Analytical cross-sectional study using Peruvian household-level data from the Demographic and Family Health Survey. Table salt iodine concentrations were considered as the dependent variable ('inadequate' with iodine levels <30 PPM and 'adequate' with levels ≥30 PPM). The association between iodine concentrations in salt and independent variables was evaluated using crude and adjusted log-binomial regression models. SETTING: Peru. PARTICIPANTS: A total of 25 007 households were included. RESULTS: In Peru, 21·8 % households had inadequate table salt iodine concentrations. Belonging to the poorer and poorest wealth index, living in the Highlands natural region, and living with women of childbearing age with native mother tongue were identified as factors associated with inadequate iodine concentrations in table salt. CONCLUSIONS: There is an urgent need to ensure that table salt with adequate iodine concentrations is available for poor populations, residents of the Highlands and households with ethnic presence. Likewise, it is necessary to promote good storage practices, greater regulation/law enforcement and better monitoring of the companies that manufacture or sell this product. Furthermore, the population needs to be informed of the disorders associated with iodine deficiency.

Postoperative inguinal pain and disability after Lichtenstein versus ONSTEP hernia repair: analysis of responses to the inguinal pain questionnaire in Spanish.

PURPOSE: To validate the Inguinal Pain Questionnaire (IPQ) in the Spanish Language and test its use in a randomized controlled trial (RCT) of hernia repair using the Lichtenstein technique vs. the ONSTEP technique. We simplified the IPQ using a principal component analysis (PCA) approach as a secondary objective. METHODS: The IPQ was translated into Spanish and validated in a cohort of 21 patients. Thereafter, 40 patients were randomized to undergo hernia repair by the Lichtenstein technique or the ONSTEP technique. IPQ and pain visual analogue (VAS) score trends over time were compared using a repeated-measures mixed-effects model. RESULTS: The Spanish version of the IPQ showed an internal consistency similar to that of the original score. No significant differences were found in the IPQ responses, pain VAS, or the rate of self-reported pain between patients who underwent the Lichtenstein technique and those who underwent the ONSTEP technique. Following PCA analysis, the number of items on the IPQ was reduced from 18 to 10. CONCLUSIONS: The Spanish version of the IPQ measures postoperative inguinal pain adequately. Based on our findings, the ONSTEP technique was not superior to the Lichtenstein technique. The simplified version of the IPQ is not significantly different from the full version and it is easier to complete. CLINICAL TRIAL REGISTRATION: NCT04138329, registered on October 24, 2019.

[Strategies to advance recovery (STAR) protocol implemented colorectal cancer patients during the COVID-19 pandemic]. / En época de COVID-19: ¿cómo las estrategias de recuperación avanzadas (STAR) pueden ayudar a dar soluciones a los pacientes oncológicos?

BACKGROUND: SARS-CoV-2 hampered the resolution of multiple diseases, including cancer. AIM: To show that a multidisciplinary program of Strategies to Advance Recovery (STAR) can be implemented in a public hospital in Chile, despite the global pandemic and state of a national catastrophe, to provide a solution to cancer patients. MATERIAL AND METHODS: A retrospective descriptive study, of patients requiring an elective resolution of a colorectal cancer. Patients met the inclusion criteria, established in the STAR program. A total of 24 perioperative interventions were performed in the protocol. Demographic variables, days of hospitalization, complications, mortality, and readmissions were described. RESULTS: The 24 interventions of the protocol were successfully implemented, although some partially. Sixteen patients aged 53 to 83 years (50% women) were operated. The median length of hospitalization was four days (range 2 to 9). Four complications were recorded, all were grade I or II according to the Clavien-Dindo classification. Two patients were readmitted. There were no reoperations or mortality. One patient was infected with coronavirus, diagnosed at the time of readmission. CONCLUSIONS: The STAR protocol reduces the length of hospital stay. In a pandemic context such as COVID-19 it becomes a useful resource and can be implemented in cancer patients, as herein reported.

[Spanish Norms for Mini-SEA (Mini Social Cognition and Emotional Assessment) in adults in Buenos Aires]. / Baremos en español del Mini-SEA (Mini Social Cognition and Emotional Assessment) en adultos normales de Buenos Aires.

INTRODUCTION AND OBJECTIVE: The Mini-SEA is a quick and brief cognitive assessment test developed to study social cognition. It consists of a modified version of the faux pas Test and an emotional recognition test based on Ekman's faces. The objective of this work was to obtain the first Spanish Speaking norms for the Mini-SEA test. MATERIAL AND METHODS: 64 healthy volunteers, between 35 and 80 years old, were recruited and evaluated with the Mini-SEA by specialized neuropsychologists from the Cities of Buenos Aires and La Plata, both in the Province of Buenos Aires, Argentina. RESULTS: The total mean (M) of the Mini-SEA was 25 +/- 4. The M of the faux pas Score was 12.5 +/- 2.4 and the M of the Emotional Recognition Score was 12.8 +/- 1.5. The sample was divided into 4 age groups: Group 1 (<50 years), Group 2 (50-59 years), Group 3 (60-69 years) and Group 4 (more than 70 years). Differences were found in the age continuum in the Emotional Recognition score between group 1 and 4 (p <0.05) and between group 3 and 4 (p <0.01), but not in the Faux Pas Score. CONCLUSION: This study presents the first normative values of the Mini-SEA Social Cognition test for a Spanish-speaking population. The Mini-SEA, being a quick and easy to administer test, allows the study of social cognition in an adequate and precise way, especially in prodromal stages of neurodegenerative diseases.

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.

Maradona in our minds: The FIFA World Cup as a way to address collective memory properties.

The FIFA World Cup football tournament is one of the most widely watched sporting events in the world. Particularly, the Argentina national football team has appeared in five World-Cup finals and support for this team has been a long-standing tradition in this country. In the present study, we asked whether the FIFA World Cup constructs a significant collective memory and to what extent this informal memory is similar to collective memories acquired in more formal settings. An online memory task was conducted asking a large group of Argentinian adults (N=407) which country was the winner, the runner-up, and the host of each tournament from 1930 to 2014. In addition, participants were asked to rank the emotional content and the response confidence of each tournament. Finally, participants reported a number of keywords associated with each tournament, to measure memory detail. Our results reveal the existence of a robust collective memory for the World Cup events, showing a high degree of memory accuracy and detail with regard to the history of the tournaments. Furthermore, an independent replication study (N=124) confirmed our findings. More specifically, we found evidence for general principles of individual memories in FIFA World-Cup informal collective memories. These results suggest that informal collective memories share common attributes with more formal collective memories such as those found in presidents or wars. Thus, collective memory properties may be independent of the conditions under which their acquisition occurs.

Psychometric validation of the survey of autobiographical memory: confirmatory factor analysis and network analysis.

Autobiographical memory (AM) represents the ability to remember personal experiences. There are several laboratory or neuropsychological tasks to assess different aspects of memory function. However, there has been little research on self-reported AM ability. The Survey of Autobiographical Memory (SAM) is a self-report questionnaire, developed to assess individual differences in AM. Evidence for the factor structure and network properties of the SAM is still needed. Here, using an integral approach, we validated the SAM using a Multiple Correspondence Analysis (Study 1) as in the original study, a Confirmatory Factor Analysis (Study 2), and a Network Analysis (Study 3) using two large independent samples (total n = 2896). We first replicated the original findings, then confirmed the existence of 4 factors and found that the Episodic and Semantic categories were the most central ones. Finally, we found between "groups" differences for Gender and Anxiety. Overall, three different methods revealed a robust profile of the SAM.

Detecting, Tracking and Counting People Getting On/Off a Metropolitan Train Using a Standard Video Camera.

The main source of delays in public transport systems (buses, trams, metros, railways) takes place in their stations. For example, a public transport vehicle can travel at 60 km per hour between stations, but its commercial speed (average en-route speed, including any intermediate delay) does not reach more than half of that value. Therefore, the problem that public transport operators must solve is how to reduce the delay in stations. From the perspective of transport engineering, there are several ways to approach this issue, from the design of infrastructure and vehicles to passenger traffic management. The tools normally available to traffic engineers are analytical models, microscopic traffic simulation, and, ultimately, real-scale laboratory experiments. In any case, the data that are required are number of passengers that get on and off from the vehicles, as well as the number of passengers waiting on platforms. Traditionally, such data has been collected manually by field counts or through videos that are then processed by hand. On the other hand, public transport networks, specially metropolitan railways, have an extensive monitoring infrastructure based on standard video cameras. Traditionally, these are observed manually or with very basic signal processing support, so there is significant scope for improving data capture and for automating the analysis of site usage, safety, and surveillance. This article shows a way of collecting and analyzing the data needed to feed both traffic models and analyze laboratory experimentation, exploiting recent intelligent sensing approaches. The paper presents a new public video dataset gathered using real-scale laboratory recordings. Part of this dataset has been annotated by hand, marking up head locations to provide a ground-truth on which to train and evaluate deep learning detection and tracking algorithms. Tracking outputs are then used to count people getting on and off, achieving a mean accuracy of 92% with less than 0.15% standard deviation on 322 mostly unseen dataset video sequences.

Rural and urban disparities in oral hygiene practices among Peruvian children aged less than 12 years: Demographic and Family Health Survey 2018.

INTRODUCTION: The adoption of adequate oral hygiene practices is important for the maintenance of good oral health in children. Rural-urban differences in the achievement of this important issue in Peru remain unknown. The objective of this study was to assess rural-urban differences in the proportion of adequate oral hygiene practices in Peruvian children aged less than 12 years, as well as associated sociodemographic factors. METHODS: This was a cross-sectional study of the 2018 Peruvian Demographic and Family Health Survey. Data from 41 330 children aged 1-11 years and their caregivers with complete information on oral hygiene practices were included in the study. Crude and adjusted prevalence ratios and 95% confidence intervals were estimated as measures of association between adequate oral hygiene practices (defined as toothbrushing two or more times a day, having a toothbrush for individual use and changing toothbrushes every 3 months) and sociodemographic variables. RESULTS: The prevalence of adequate oral hygiene practices was 38.3% in the rural area and 57.3% in urban areas. The greatest rural-urban disparities for adequate oral hygiene practices were observed in the age group of 6-11 years (43.4% v 64.1%), those in families in which the head of the household had no formal education (28.1% v 47.3%) or primary education (36.8% v 53.0%), those who had used dental services in the previous 6 months (46.4% v 64.4%) and those residing in the highlands (31.5% v 48.2%). All independent variables were significantly associated with adequate oral hygiene practices in rural areas, except for the jungle region variable and the richest wealth index. CONCLUSION: Four out of ten Peruvian children living in rural areas perform adequate oral hygiene practices compared to six out of ten children in urban areas. Furthermore, inequalities in the adoption of oral hygiene practices favor urban children according to sociodemographic factors. Strengthening of oral health promotion strategies is urgently needed in order to decrease inequalities in the adoption of adequate oral hygiene in children living in rural areas of Peru and countries with similar sociodemographic characteristics.