Evaluación del rendimiento de los principales híbridos comerciales de maíz en la localidad de San Marcos Sud

El cultivo de maíz representa la gramínea estival de mayor participación en los esquemas de rotación agrícola de la provincia de Córdoba. La superficie sembrada experimentó un crecimiento significativo en las últimas campañas, así en la campaña 2016/2017 en la provincia de Córdoba se sembraron más de 1,6 millones de hectáreas, logrando una producción superior a los 12.9 millones de toneladas (Ministerio de Agroindustria de la Nación, 2018). El ajuste de la fertilización, la elección del híbrido y la elección de la densidad de siembra según las características del ambiente, corresponden a las prácticas de manejo de mayor impacto sobre el rendimiento del cultivo de maíz. En este sentido, el objetivo de este trabajo consistió en evaluar el rendimiento de los híbridos comerciales de maíz de mayor adaptación zonal sembrados en fecha temprana.EEA Marcos JuárezFil: Pietrantonio, Julio. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Marcos Juárez. Agencia de Extensión Rural Bell Ville; ArgentinaFil: Pagnan, Luis Federico. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Marcos Juárez. Agencia de Extensión Rural Justiniano Posse; ArgentinaFil: Alladio, Ricardo Matias. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Marcos Juárez. Agencia de Extensión Rural Bell Ville; ArgentinaFil: Errasquin, Lisandro. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Marcos Juárez. Agencia de Extensión Rural Justiniano Posse; ArgentinaFil: Cotorás, Daniel. Asesor privado; Argentin

Measurement properties of the Short Form Sarcopenia Quality of Life (SF-SARQOL) Questionnaire in an international dataset

peer reviewe

Evaluación de la calidad de los servicios del sector telecomunicaciones móviles en México utilizando la herramienta SERVQUAL

La aplicación del instrumento SERVQUAL, desarrollado por Zeithaml, Berry y Parasurama, para medir la calidad de los servicios en el sector de las telecomunicaciones móviles, específicamente en Telcel, Iusacell, Telefónica Movistar y Nextel. El modelo servqual sirve para evaluar la calidad en el servicio en función de la diferencia entre expectativas y percepciones de los clientes.Maestría en Administración de las Telecomunicacione

Standard error of measurement and smallest detectable change of the SarQoL questionnaire: an analysis of subjects from 9 validation studies

ObjectivesThe Sarcopenia Quality of Life (SarQoL) questionnaire, a sarcopenia-specific patient-reported outcome measure, evaluates quality of life with 55 items. It produces 7 domain scores and 1 overall quality of life score, all between 0 and 100 points. This study aims to contribute to the interpretation of the SarQoL scores by calculating the standard error of measurement (SEM) and smallest detectable change (SDC) in a sample of subjects from 9 studies.MethodsSubjects from 9 studies (conducted in Belgium, Brazil, Czech Republic, England, Greece, Lithuania, Poland and Spain) were included. The SEM, a measure of the error in the scores that is not due to true changes, was calculated by dividing the standard deviation of the difference between test and retest scores (SDdiff) by √2. The SDC, defined as change beyond measurement error, was calculated by multiplying SDdiff by 1.96. Bland-Altman plots were assessed for the presence of systematic errors.ResultsA total of 278 sarcopenic subjects, aged 77.67 ± 7.64 years and 61.5% women, were included. The SEM for the overall SarQoL score ranged from 0.18 to 4.20 points for the individual studies, and was 2.65 points when all subjects were analyzed together. The SDC for the overall score ranged from 0.49 to 11.65 points for the individual studies, and was 7.35 points for all subjects. The Bland-Altman plots revealed no systematic errors in the questionnaire.ConclusionThis study shows that, for individual subjects, a change in overall quality of life of at least 7.35 points (on a scale from 0 to 100) would have to be observed to confirm that a true change, beyond measurement error, has occurred. It also demonstrated that the SarQoL questionnaire is a precise instrument, with the observed scores within less than 3 points of the theoretical “true score”.<br/

Measuring health-related quality of life in sarcopenia: summary of the SarQoL psychometric properties.

peer reviewedPatient perspectives are now widely recognized as a key element in the evaluation of health interventions. Therefore, the provision of specific and validated Patient Reported Outcome Measures that emphasize the lived experience of patients suffering from specific diseases is very important. In the field of sarcopenia, the only validated specific health-related quality of life (HRQoL) instrument available is the Sarcopenia Quality of Life questionnaire (SarQoL). This self-administrated HRQoL questionnaire, developed in 2015, consists of 55 items arranged into 22 questions and has currently been translated into 35 languages. Nineteen validation studies performed on SarQoL have consensually confirmed the capacity of SarQoL to detect difference in HRQoL between older people with and without sarcopenia, its reliability and its validity. Two further observational studies have also indicated its responsiveness to change. A short form SarQoL, including only 14 items has further been developed and validated to reduce the potential burden of administration. Research on the psychometric properties of SarQoL questionnaire is still encouraged as the responsiveness to change of SarQoL has not yet been measured in the context of interventional studies, as limited prospective data currently exist and as there is still not cut-off score to define a low HRQoL. In addition, SarQoL has mainly been used in community-dwelling older individuals with sarcopenia and would benefit to be studied in other types of populations. This review aims to provide to researchers, clinicians, regulators, pharmaceutical industries and other stakeholders a clear summary of comprehensive evidence on the SarQoL questionnaire published up to January 2023Query

Measuring health-related quality of life in sarcopenia: summary of the SarQoL psychometric properties

Patient perspectives are now widely recognized as a key element in the evaluation of health interventions. Therefore, the provision of specific and validated Patient Reported Outcome Measures that emphasize the lived experience of patients suffering from specific diseases is very important. In the field of sarcopenia, the only validated specific health-related quality of life (HRQoL) instrument available is the Sarcopenia Quality of Life questionnaire (SarQoL). This self-administrated HRQoL questionnaire, developed in 2015, consists of 55 items arranged into 22 questions and has currently been translated into 35 languages. Nineteen validation studies performed on SarQoL have consensually confirmed the capacity of SarQoL to detect difference in HRQoL between older people with and without sarcopenia, its reliability and its validity. Two further observational studies have also indicated its responsiveness to change. A short form SarQoL, including only 14 items has further been developed and validated to reduce the potential burden of administration. Research on the psychometric properties of SarQoL questionnaire is still encouraged as the responsiveness to change of SarQoL has not yet been measured in the context of interventional studies, as limited prospective data currently exist and as there is still not cut-off score to define a low HRQoL. In addition, SarQoL has mainly been used in community-dwelling older individuals with sarcopenia and would benefit to be studied in other types of populations. This review aims to provide to researchers, clinicians, regulators, pharmaceutical industries and other stakeholders a clear summary of comprehensive evidence on the SarQoL questionnaire published up to January 2023Query