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RESUMO O objetivo do trabalho consistiu em avaliar a influência da sazonalidade, da eventual sobrecarga hidráulica, do porte, do custo e da idade no desempenho de estações convencionais de tratamento de água pela análise de confiabilidade como ferramenta de avaliação. Para tal, empregaram-se dados operacionais do efluente de 20 estações operadas pelo mesmo prestador referentes ao período 2009-2014. As análises estatísticas mostraram que o desempenho, em termos de turbidez do efluente, elevou-se no período de estiagem em relação ao chuvoso e nas unidades de pequeno porte avaliadas. No mesmo contexto, a quase totalidade das estações submetidas à sobrecarga hidráulica apresentou desempenho inferior. A determinação da faixa de turbidez requerida na saída da estação, pela análise de confiabilidade, mostrou-se importante ferramenta de gestão permitindo hierarquizar ações de melhorias nos sistemas. Não se verificou correlação entre o nível de confiabilidade e o custo do tratamento e a idade da estação.
ABSTRACT The objective of this work was to evaluate the influence of seasonality, possible hydraulic overload, size, cost, and age of the station in the performance of conventional water treatment stations based on reliability analysis as an evaluation tool. For this purpose, operational data of the effluent from 20 stations operated by the same provider for the 2009-2014 period were used. Statistical analyses showed that the performance was increased in the dry season compared to the rainy one and in the small units evaluated. In the same scenario, almost all the stations submitted to hydraulic overload exhibit inferior performance. The determination of turbidity range required at the exit of the station, through the reliability analysis, proved to be an important management tool, allowing to hierarchize improvement actions in the systems. In addition, there was no correlation between the level of reliability and the treatment cost and the age of the station.
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ABSTRACT BACKGROUND: Leg length discrepancy (LLD) may play a key role in exercise biomechanics. Although the Podoprint platform has been used in dynamic pressure studies, there are no data regarding the reliability and repeatability of dynamic measurements under simulated LLD conditions. OBJECTIVES: To determine the intra and intersession repeatability and reliability of dynamic parameters of the Podoprint pressure platform under simulated LLD conditions. DESIGN AND SETTING: Observational cross-sectional study at a public university. METHODS: Thirty-seven healthy volunteers participated in this study. LLD was simulated using ethyl vinyl acetate plantar lifts with heights of 5 mm, 10 mm, 15 mm and 20 mm located under the right shoe of each volunteer. The procedure was performed to capture the dynamic parameters of each participant under five different simulated LLD conditions. Stance time, mean pressure and peak pressure measurements were registered in three trials for each foot and each LLD level. Data were collected during two separate testing sessions, in order to establish intrasession and intersession reliability. RESULTS: The intraclass correlation coefficients (ICCs) for intrasession reliability ranged from 0.775 to 0.983 in the first session and from 0.860 to 0.985 in the second session. The ICCs for intersession reliability ranged from 0.909 to 0.990. Bland-Altman plots showed absence of systematic measurement errors. CONCLUSIONS: The results from this study indicate that the Podoprint platform is a reliable system for assessing dynamic parameters under simulated LLD conditions. Future studies should evaluate plantar pressures under LLD conditions, in association with exercise, biomechanics and musculoskeletal disorders.
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Humans , Foot , Leg , Exercise , Cross-Sectional Studies , Reproducibility of ResultsABSTRACT
Objective To validate the Union Physio-Psycho-Social Assessment Questionnaire(UPPSAQ-70)and test its validity and reliability.Methods From April,2013 to July,2018,patients were asked to finish the computer evaluation of UPPSAQ-70 and Symptom Checklist 90(SCL-90)in Peking Union Medical College Hospital(PUMCH).Confirmatory factor analysis(CFA)was conducted on the SPSS 17.0,and the number of fixed factors was 8 factors and 3 factors.Amos 23.0 was used to verify the original 8-factor model,8-factor revision model,3-factor model,3-factor revision model,and single-factor model.Each factor of SCL-90 was used as the calibration standard to calculate the correlation coefficient between factors.The retest reliability was tested by the outpatients in PUMCH in July,2018.Results Exploratory factor analysis indicated that the 8-factor revised model included:depression,anxiety and fatigue,sleep,physical discomfort,sexual function,happiness and satisfaction,hypochondria,and social anxiety.The 3 factors revised model included that:psychological,physiological and social dimension.Confirmatory factor analysis indicated that the 8-factor modified model was superior to the 3-factor model and the single-factor model: =10 410.4,=1862,RMSEA=0.07,CFI=0.753,and NFI=0.715.With SCL-90 as the standard criteria,except the low correlation coefficient between emotional scale and depression(=0.600)and anxiety(=0.520),the correlation coefficients of other symptoms were below 0.5.The chronbach's between each factor and total score of UPPSAQ-70 was between 0.823 and 0.904,and the Chronbach's coefficient of the whole scale was between 0.954 and 0.956 after each item was deleted.The retest reliability of the scale of 32 participants Chronbach's was 0.847.Each item of the scale measured between one week was significantly correlated(<0.05). Conclusion UPPSAQ-70 is a good scale for evaluating overall health status and is especially feasible in general hospitals.
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Humans , Factor Analysis, Statistical , Psychological Tests , Reference Standards , Psychometrics , Reproducibility of Results , Surveys and QuestionnairesABSTRACT
El estudio del engagement en el trabajo es cada vez más común en la literatura científica. La estructura factorial del instrumento más utilizado por los investigadores para evaluar el engagement, la Utrecht Work Engagement Scale (UWES), ha mostrado múltiples inconsistencias en diversos países. El objetivo de este trabajo es examinar las propiedades psicométricas de la UWES en una muestra de 2.796 trabajadores en Puerto Rico. Se examinó la estructura factorial de la escala mediante ecuaciones estructurales, con el método de estimación de máxima verosimilitud. Los resultados muestran que el modelo de tres factores posee un mejor ajuste a los datos de la escala, siendo consistente con la concepción del engagement como constructo compuesto por tres dimensiones: vigor, dedicación y absorción. La validez y la fiabilidad de la UWES son adecuadas, por lo que se concluyó que la escala posee las cualidades para ser utilizada en investigaciones en el contexto laboral puertorriqueño.
The study of work engagement is becoming increasingly common in the scientific literature. There are many inconsistencies regarding the factorial structure of the Utrecht Work Engagement Scale (UWES) the most widely used instrument by researchers in different countries. The objective of this study is to examine the psychometric properties of the UWES using a sample of 2,796 employees in Puerto Rico. We examined the psychometric properties of UWES using structural equations with the method of maximum likelihood estimation. The results show that the three-factor model has a better fit, being consistent with the conception of engagement as a construct formed by three dimensions: vigor, dedication, and absorption. The validity and reliability of UWES are appropriate, and we conclude that the scale has the qualities to be used in research in the Puerto Rican labor context.
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Psychometrics , Puerto Rico , WorkABSTRACT
Objective To analyze reliability, validity and the correlative factors of the Chinese Paced Auditory Serial Addition Test (PASAT).Methods Fifty healthy subjects were assessed with PASAT, MMSE, Hamilton Depression Rating Scale(HAMD) ,the Fatigue Severity Scale and the Pittsburgh Sleep Quality Index( PSQI).After(7 ±2) days of the initial assessment,20 of the subjects were enrolled in the test-retest reliability and scorer reliability test,and 40 were taken into the construct validity test which included other 10 neuropsychological tests such as the Prospective Memory Test,the Chinese Rey Auditory Verbal Learning Test,the Symbol Digit Modalities Test,the Trail Making Test and so on.Results The internal consistency reliability ( cronbach' s α = 0.900 ),test-retest reliability ( ICC = 0.837, P = 0.000), score reliability ( ICC = 0.999, P = 0.000) of the Chinese PA-SAT were generally high.Practice effect were observed in short term ( Z = -3.304, P= 0.001 ).Executive function,working memory,verbal memory, time based prospective memory and the ability of logic reasoning were involved to complete the task of PASAT.There was a significant positive correlation of the PASAT results and the education years( r=0.582, P=0.000).Conclusion The Chinese PASAT has good reliability and validity for Chinese young and middle-aged people.Years of education and the Chinese PASAT were significantly related.On the other hand, the relationship of the Chinese PASAT and other factors, such as age and gender, should be further explored in future.
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La evaluación de las competencias específicas tiene el propósito de contribuir al desarrollo de los profesionales de la salud y prepararlos para lograr un alto desempeño en la realización de sus actividades y funciones, estar técnicamente calificados para la investigación y ser capaces de desarrollar habilidades para dar respuesta a los problemas con una consecuente y real sistematización de la experiencia científica. En la presente investigación se midió el nivel de actualización científico-técnica del personal de Enfermería que labora en servicios de Neonatología. Se creó un grupo de expertos para determinar los temas a evaluar, confeccionar la tabla de especificaciones y diseñar el instrumento. Se realizó el análisis de confiabilidad del examen. Se detectaron algunas insuficiencias de conocimientos
The evaluation of the specific competences is aimed at contributing to the development of health professionals and at preparing them to attain a high performance in their activities and functions and to be technically qualified for research and to be able to develop abilities to give an answer to the problems with a consequent and real systematization of the scientific experience. The scientific and technical updating level of the nursing personnel working in the Neonatology services was measured. A group of experts was created to determine the topics to be evaluated, to make the table of specifications and to desing the instrument. The reliability analysis of the test was made. Some knowledge deficiencies were detected.