To estimate the frequency of headache in patients with confirmed COVID-19 and characterize the phenotype of headache attributed to COVID-19, comparing patients depending on the need of hospitalization and sex, an observational study was done. We systematically screened all eligible patients from a reference population of 261,431 between March 8 (first case) and April 11, 2020. A physician administered a survey assessing demographic and clinical data and the phenotype of the headache. During the study period, 2194 patients out of the population at risk were diagnosed with COVID-19. Headache was described by 514/2194 patients (23.4%, 95% CI 21.7–25.3%), including 383/1614 (23.7%) outpatients and 131/580 (22.6%) inpatients. The headache phenotype was studied in detail in 458 patients (mean age, 51 years; 72% female; prior history of headache, 49%). Headache was the most frequent first symptom of COVID-19. Median headache onset was within 24 h, median duration was 7 days and persisted after 1 month in 13% of patients. Pain was bilateral (80%), predominantly frontal (71%), with pressing quality (75%), of severe intensity. Systemic symptoms were present in 98% of patients. Headache frequency and phenotype was similar in patients with and without need for hospitalization and when comparing male and female patients, being more intense in females.Trial registration: This study was supported by the Institute of Health Carlos III (ISCIII), code 07.04.467804.74011 and Regional Health Administration, Gerencia Regional de Salud, Castilla y Leon (GRS: 2289/A/2020).

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IMPORTANCE Black women bear a disproportionate burden of breast cancer mortality in the US, in part due to inequities in the use of mammography. Population screening for breast cancer risk in primary care is a promising strategy for mitigating breast cancer disparities, but it is unknown whether this strategy would be associated with increased mammography rates in underserved women of racial and ethnic minority groups.OBJECTIVE To examine whether providing individualized breast cancer risk estimates is associated with an increase in the rate of screening mammography. DESIGN, SETTING, AND PARTICIPANTSA cohort study was conducted in women receiving individualized risk estimates as part of routine primary health care at federally qualified health centers in medically underserved communities in Chicago, Illinois. The study was conducted from

In this cohort of AIS patients, atrial fibrillation showed a seasonal variation and a nonhomogeneous distribution across air temperatures, with peaks in cold seasons and low temperatures on the day of stroke onset.

La ley de Engel señala que en la medida que aumenta el ingreso familiar se demanda más servicios en los alimentos. Si continua aumentando el ingreso, la familia estabiliza su consumo de alimentos y cada vez destina una proporción menor del ingreso a alimentos. Cuando las familias satisfacen sus necesidades de alimentos, el mercado de éstos crece al ritmo de la población, o se exporta.Ante esto las unidades de producción agropecuarias compiten por ganar mercado y expanden su producción mediante un crecimiento extensivo: más superficie cultivada y más cabezas de ganado; un crecimiento intensivo: más rendimiento por hectárea y más productividad por animal, y un cambio de producción: producir más de lo que más vale. El objetivo de esta investigación es medir y mostrar que el sector agropecuario mexicano de 1980-2010 ha transitado de una agricultura basada en cereales a una cuyos ejes dinámicos son la producción de carne, huevo, leche, hortalizas y frutas. Se determinaron tasas discretas en el periodo de análisis de los productos agrícolas para medir el crecimiento del ingreso real, superficie, rendimiento, el efecto composición y los precios. Para productos ganaderos se calcularon tasas discretas para el ingreso real, el inventario, la productividad animal y el impacto de los precios. Los resultados señalan que los productos con mayor crecimiento en producción son los de tendencia positiva en su ingreso real y menor riesgo, por el contrario granos, forrajes y productos industriales resultaron con mayor volatilidad.

Latin America encompasses 22 countries with approximately 500 million inhabitants. Argentina, located at the extreme south of the American continent, is one of the largest and most populated countries in the region. With a total area of 2 766 890 km 2 (1 068 302 sq. mi), it is the eighth largest country in the world, and the largest among Spanish-speaking nations (1). The population was 37 869 723 inhabitants in 2004 and is estimated today at 40 million people with 88Á6% localised in urban regions. Buenos Aires with three million people is among the 10 most populated cities in the world. The Province of Buenos Aires, with 15 million people, heavily concentrates the country's population. Argentina's GDP was calculated at 326Á474 billion dollars in 2008 (2). Life expectancy at birth is 75 years and the adult literacy rate is 97Á6 (28th in the world) (3). In contrast to most other Latin American countries, which have a large majority of indigenous people, most Argentineans are of Spanish and Italian ancestry. To fully understand the context for medical practice in general and cerebrovascular disease in particular, it is necessary to be familiar with some of the cultural and economic factors that heavily influence medical practice in Argentina. Conflicts of interest: None.

ABSTRACT. The MoCA is a brief useful test to diagnose mild cognitive impairment (MCI) and mild dementia (MD). To date, no Argentine cross-cultural adapted validations of the Spanish version have been reported. Objective: To validate the MoCA in the elderly and study its usefulness in MCI and MD. Methods: This study included 399 individuals over 60 years old evaluated in the Cognitive-Behavioral Department (2017-2018). Patients with<3 years of education, sensory disturbances, psychiatric disorders, or moderate-severe dementia were excluded. The control group comprised cognitively normal subjects. Participants were classified according to neuropsychological assessment and clinical standard criteria into Control, MCI or MD groups. A locally adapted MoCA (MOCA-A) was administered to the patients and controls. Results: Mean educational level was 10.34 years (SD 3.5 years). MoCA-A score differed significantly among groups (p<0.0001). MoCA-A performance correlated with educational level (r: 0.406 p<0.00001). Adopting a cut-off score ≥25 (YI=0.55), the sensitivity for MCI was 84.8% and for MD 100%, with specificity of 69.7%. When adding a single point to the score in patients with ≤12 years of education, the specificity of the test reached 81%. Conclusion: The MoCA-A is an accurate reliable screening test for MCI and MD in Argentina.

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