975 resultados para U Mann-Whitney


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The practices developed in the everyday life of obstetric services are sometimes out of step with the recommendations of the public health policies. Accordingly, this research had the objective of assessing the quality of the care provided to women and children during cases of natural childbirth in municipal public maternity wards of the city of Natal/RN, Brazilian Northeast. We developed a cross-sectional and quantitative study in two maternity wards that provide care actions to pregnant women at regular risk (maternity wards A and B). The participants were 314 puerperal women who were treated during the period between April and July 2014, whose children were born alive, through transpelvic way, with spontaneous or induced beginning of labor and that showed physical and emotional conditions to respond to the proposed questions. The data collection instrument was constructed on the basis of the recommendations of the World Health Organization focused on the care of normal childbirth and validated by skilled judges, and the final version has obtained optimum agreement (k = 0,96; IVC = 0,99). Associated with these recommendations, we used three indicators: percentage of women with induced labor or subjected to elective cesarean section (Indicator A); percentage of women served by a qualified health professional during labor and childbirth (Indicator B); and Bologna Index (Indicator C). The research obtained a favorable opinion of the Research Ethics Committee from the Federal University of Rio Grande do Norte, under the nº 562.313 and Certificate of Presentation for Ethics Appreciation: 25958513.0.0000.5537. The analysis of categories related to the recommendations of the World Health Organization was conducted by means of absolute and relative frequency and the Chi-square Pearson’s and Fisher’s exact tests made the comparison of the differences observed between the two maternity wards. Furthermore, we calculated the percentage of the indicators A and B and with the results of the Indicator C, the quality was assessed as follows: the closer to 5, the better will be the quality, and the closer to 0, the worst will be the quality, and the Mann-Whitney U test was used to compare the differences of the obtained averages. The significance level of 5% was considered in all statistical tests. The differences between the maternity wards were identified with regard to the provision of liquids orally (p=0,018), stimulus for non-supine positions (p=0,002), existence of partograph (p=0,001), support or welcoming by health professionals (p= 0,047), intravenous infusion (p<0,001), supine position (p<0,001), use of oxytocin (p<0,001), food and liquid restriction (p= 0,002) and, lastly, the fact of the touch is performed by more than 1 examiner (p=0,011). The indicators A and B showed percentages of 13,09% and 100%, respectively. The overall average of the Indicator C was equal to 2,07 (± 0,74). There was a statistically significant difference between the averages of the maternity wards (p<0,001). The care actions provided during the process of labor and childbirth is inappropriate, especially in the maternity ward B. It is necessary to implement improvements and redesign the obstetric model in force

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Lung cancer is the most common of malignant tumors, with 1.59 million new cases worldwide in 2012. Early detection is the main factor to determine the survival of patients affected by this disease. Furthermore, the correct classification is important to define the most appropriate therapeutic approach as well as suggest the prognosis and the clinical disease evolution. Among the exams used to detect lung cancer, computed tomography have been the most indicated. However, CT images are naturally complex and even experts medical are subject to fault detection or classification. In order to assist the detection of malignant tumors, computer-aided diagnosis systems have been developed to aid reduce the amount of false positives biopsies. In this work it was developed an automatic classification system of pulmonary nodules on CT images by using Artificial Neural Networks. Morphological, texture and intensity attributes were extracted from lung nodules cut tomographic images using elliptical regions of interest that they were subsequently segmented by Otsu method. These features were selected through statistical tests that compare populations (T test of Student and U test of Mann-Whitney); from which it originated a ranking. The features after selected, were inserted in Artificial Neural Networks (backpropagation) to compose two types of classification; one to classify nodules in malignant and benign (network 1); and another to classify two types of malignancies (network 2); featuring a cascade classifier. The best networks were associated and its performance was measured by the area under the ROC curve, where the network 1 and network 2 achieved performance equal to 0.901 and 0.892 respectively.

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Dancers of all forms often engage in aesthetic yet challenging movements. Their training, choreography, and performances require strength, stamina, flexibility, grace, passion, and emotion. Ballet and Bharatanatyam (an Indian classical dance form) dancers utilize two movements in each of their dance forms that are similar—a half-sitting pose and a full-sitting pose, both requiring external rotation of the legs and bending at the knee joints. The purpose of this study was to examine and compare the biomechanics of joint reaction forces and knee angles in both styles of dance for these particular poses. The study included nine female ballet dancers and seven female Bharatanatyam dancers. Hamstring and gastrocnemius flexibility were measured for each dancer. Knee angles, vertical peak forces, and moments were determined for dancers at the lowest point of their bending positions. Mann-Whitney U tests found significant differences in hamstring flexibility, right gastrocnemius flexibility, and knee angles for the full-sitting poses between ballet and Bharatanatyam dancers. No significant difference was found in the vertical peak forces as a ratio to total body weight and moments between the two styles of dance. Further research can be done to more directly assess a difference in injury risk between the ballet and Bharatanatyam dancers.

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Objectives: The primary aim of this study was to investigate partially dentate elders' willingness-to-pay (WTP) for two different tooth replacement strategies: Removable Partial Dentures (RPDs) and, functionally orientated treatment according to the principles of the Shortened Dental Arch (SDA). The secondary aim was to measure the same patient groups' WTP for dental implant treatment.Methods: 55 patients who had completed a previous RCT comparing two tooth replacement strategies (RPDs (n=27) and SDA (n=28)) were recruited (Trial Registration no. ISRCTN26302774). Patients were asked to indicate their WTP for treatment to replace missing teeth in a number of hypothetical scenarios using the payment card method of contingency evaluation coupled to different costs. Data were collected on patients' social class, income levels and other social circumstances. A Mann-Whitney U Test was used to compare differences in WTP between the two treatment groups. To investigate predictive factors for WTP, multiple linear regression analyses were conducted.Results: The median age for the patient sample was 72.0 years (IQR: 71-75 years). Patients who had been provided with RPDs indicated that their WTP for this treatment strategy was significantly higher (€550; IQR: 500-650) than those patients who had received SDA treatment (€500; IQR: 450-550) (p=0.003). However patients provided with RPDs indicated that their WTP for SDA treatment (€650; IQR: 600-650) was also significantly higher than those patients who had actually received functionally orientated treatment (€550; IQR: 500-600) (p<0.001). The results indicated that both current income levels and previous treatment allocation were significantly correlated to WTP for both the RPD and the SDA groups. Patients in both treatment groups exhibited little WTP for dental implant treatment with a median value recorded which was half the market value for this treatment (€1000; IQR: 500-1000).Conclusions: Amongst this patient cohort previous treatment experience had a strong influence on WTP as did current income levels. Both treatment groups indicated a very strong WTP for simpler, functionally orientated care using adhesive fixed prostheses (SDA) over conventional RPDs. Clinical significance: Partially dentate older patients expressed a strong preference for functionally orientated tooth replacement as an alternative to conventional RPDs.

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Soil erosion and unsustainable land use produce adverse effects on SOC content. Soil management techniques and corrections can be applied for soil recovery, especially, with afforestaion purposes. This study presents the short term effects on the application of different treatments on soil properties for soil included in several sets of closed plots located in the experimental area of Pinarillo (Nerja, Spain). The analysed soil properties were: PH, EC, organic carbon, total nitrogen and total carbon. In order to verify possible differences, we applied the test of Mann-Whitney U in corroboration with the previous homogeneity test of variance.

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A descriptive study was developed in order to compare indoor and outdoor air contamination caused by fungi and particles in seven poultry units. Twenty eight air samples of 25 litters were collected through the impaction method on malt extract agar. Air sampling and particles concentration measurement were done in the interior and also outside premises of the poultries’ pavilions. Regarding the fungal load in the air, indoor concentration of mold was higher than outside air in six poultry units. Twenty eight species / genera of fungi were identified indoor, being Scopulariopsis brevicaulis (40.5%) the most commonly isolated species and Rhizopus sp. (30.0%) the most commonly isolated genus. Concerning outdoor, eighteen species/genera of fungi were isolated, being Scopulariopsis brevicaulis (62.6%) also the most isolated. All the poultry farms analyzed presented indoor fungi different from the ones identified outdoors. Regarding particles’ contamination, PM2.5, PM5.0 and PM10 had a statistically significant difference (Mann-Whitney U test) between the inside and outside of the pavilions, with the inside more contaminated (p=.006; p=.005; p=.005, respectively). The analyzed poultry units are potential reservoirs of substantial amounts of fungi and particles and could therefore free them in the atmospheric air. The developed study showed that indoor air was more contaminated than outdoors, and this can result in emission of potentially pathogenic fungi and particles via aerosols from poultry units to the environment, which may post a considerable risk to public health and contribute to environmental pollution.

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La literatura científica advierte de la elevada presencia de trastornos mentales en el medio penitenciario. Por ello, en este trabajo nos planteamos evaluar la salud psicosocial y la autorregulación de reclusos en relación a un grupo control de participantes no reclusos; adicionalmente tratamos de conocer la incidencia de la variable tiempo de reclusión y analizar el efecto intragrupo pre-post entrenamiento en habilidades sociales y comunicativas. La muestra estuvo compuesta por 20 varones, 10 reclusos (cinco con más de un año de condena y cinco con menos) y 10 participantes sin antecedentes delictivos, a los que se les administró el cuestionario de salud GHQ-28 y la escala de autorregulación MAPA. Se aplicó la prueba no paramétrica Mann-Whitney (U) para el cálculo de probabilidades y el test de Cramer (V) como indicador del tamaño de efecto. Los resultados indicaron que la reclusión no implicó necesariamente peor salud y autorregulación, que el tiempo de condena no ejerció excesiva influencia sobre estas dos dimensiones y que el taller de habilidades sociales no pareció, según el análisis pre-postest, haber producido efectos sobre la salud y la autorregulación de los reclusos. Finalmente, se discuten algunas reflexiones generales así como nuevas propuestas para mejorar actuaciones futuras.

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Background: The goal of stroke rehabilitation has shifted from mere survival of a victim to how well a survivor can be effectively reintegrated back into the community. Objectives: The present study determined the level of satisfaction with community reintegration (CR) and related factors among Nigerian community-dwelling stroke survivors (CDSS). Methods: This was a cross-sectional survey of 71 volunteering CDSS (35 males, 36 females) from selected South-Eastern Nigerian communities. Reintegration to Normal Living Index was used to assess participants’ CR. Data was analysed using Spearman rank-order correlation, Kruskal-Wallis and Mann-Whitney U tests at p≤0.05. Results: Participants generally had deficits in CR which was either mild/moderate (52.1%) or severe (47.9%). Scores in the CR domains of distance mobility, performance of daily activities, recreational activities and family roles were particularly low (median scores ≤ 4). CR was significantly correlated with and influenced by age (r=-0.35; p=0.00) and presence/absence of diabetes mellitus (u=3.56.50; p=0.01), pre- (k=6.13; p=0.05) and post-stroke employment (k=18.26; p=0.00) status, type of assistive mobility device being used (AMD) (k=25.39; p=0.00) and support from the community (k=7.15; p=0.03) respectively. Conclusion: CR was generally poor for this CDSS sample. Survivors who are older, having diabetes as co-morbidity, using AMD (particularly wheel-chair) and without employment pre- and/or post-stroke may require keener attention. Rehabilitation focus may be targeted at enhancing mobility functions, vocational and social skills.

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Presence and concentrations of radionuclides could be as a result of natural and human activities. This study examined the associations and differences among soil, sediment and water specific activities of long-lived radioactive element (LLRE). Gamma spectroscopy was used to measure the concentration of the LLRE along the Mini Okoro/Oginigba Creek, Port Harcourt. Specific activities of three selected LLRE were derived. Correlation analysis was carried out to examine associations among the specific activities across different substrates. A strong and a significant negative correlation exists between the specific activities of Water 40K and Soil 232Th (r =-0.721, p<0.05); Water 238U and Soil 238U (r = -0.717, p<0.05) and Water 40K and Sediment 238U (r=-0.69, p<0.05). Comparison using Mann-Whitney U test shows that, soil and sediment are similar in their specific activities with Z values of -0.408, -1.209 and -1.021 (p > 0.05) for 40K, 232Th and 238U respectively. The concentration of solid samples (soil and sediment) is different from the liquid (water) samples. These associations can be attributed to some specific underlying factors. And in other to understand them there is need for more studies.

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Fundamento. Los instrumentos de medida de salud son esenciales en la actividad clínica diaria. Sin embargo, es necesario un proceso de validación para poder certificar la validez y fiabilidad de los mismos. En la actualidad no existe ninguno que permita evaluar la repercusión del dolor en la productividad laboral de los pacientes. El objetivo de nuestro estudio es validar un cuestionario para evaluar las consecuencias del dolor en dicha productividad. Método. En base al Work Productivity and Activity Impairment Questionnaire - General Health hemos creado una versión modificada denominada WPAI:Pain con el fin obtener un cuestionario que pudiera medir las consecuencias del dolor en la productividad laboral. El estudio se realizó siguiendo las pautas habituales de validación de pruebas, omitiéndose las fases de redacción y validez de contenido ya que se modificaba un cuestionario existente. Resultados. Se obtuvieron 577 cuestionarios en dos hospitales universitarios españoles. Se comprobó la capacidad discriminante del cuestionario mediante prueba de U de Mann-Whitney. Se realizaron los test de fiabilidad obteniéndose un alfa de Cronbach de 0,896 con un test de dos mitades de Guttman de 0,921. Se comprobó la estabilidad con un test-retest estadísticamente significativo. La validez de constructo se estableció mediante correlación de Pearson comparando los resultados del cuestionario con el dolor en escala visual analógica, que resultó estadísticamente significativa para todos los valores. Conclusiones. El cuestionario WPAI:Pain es un instrumento de medida válido para determinar las consecuencias del dolor en la productividad laboral de los pacientes, siendo el único validado en español. Sin embargo, se requieren estudios de mayor envergadura para poder confirmar una validez universal.

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Propósito y Método de Estudio: El propósito fue identificar la relación que existe de la Sensibilidad Ética y el consumo de alcohol en el personal de enfermería de un hospital de salud pública del área metropolitana de Monterrey, Nuevo León. El diseño del estudio fue descriptivo correlacional. La población estuvo conformada por 325 enfermeros de ambos sexos de una institución de salud pública en el área metropolitana de Monterrey, Nuevo León. Se utilizó un muestreo aleatorio simple y el tamaño de la muestra se determinó a través del paquete estadístico n’Query Advisor Versión 4.0 ® (Elashoff, Dixon, Crede y Fothenringham, 1997). Se estimó la muestra para una proporción con un intervalo de confianza (IC) de 95%, usando un enfoque conservador (p=q=½) con un límite de error de estimación de .05 (±5%). Se determinó, una muestra final de 219 enfermeros. Se utilizó una Cédula de Datos Personales y Laborales y de Prevalencia de Consumo de Alcohol y los instrumentos: Cuestionario de Sensibilidad Ética [MSQ] que obtuvo un Coeficiente de Confiabilidad de .73 y el Test de Identificación de Trastornos Asociados al Consumo del Alcohol [AUDIT] que presentó una consistencia interna de .80. Se aplicó la prueba de Kolmogorov-Smirnov con corrección de Lilliefors y se utilizó estadística no paramétrica: U de Mann-Whitney, H de Kruskal-Wallis y Coeficiente de Correlación de Spearman. Contribución y Conclusiones: La edad promedio del consumo de alcohol fue de 18 años con un consumo de 3 bebidas alcohólicas en un día típico. La prevalencia global del consumo de alcohol fue de 84.5% con un IC 95% [79-89], la prevalencia lápsica del 70.3% con un IC 95% [64-76], la prevalencia actual fue del 50.2% con un IC 95% [43-56] y la prevalencia instantánea fue del 22.7% con un IC 95% [17-28]. El consumo de alcohol mostró diferencias significativas por sexo (X2=28.6, p=.001) el sexo femenino presentó mayor consumo sensato (64.9%) y el consumo dependiente y dañino fue mayor para el sexo masculino (42.1%, 35.1%). Así mismo se encontraron diferencias significativas de consumo de alcohol por edad (X2=12.47, p=.014), donde le personal de 35 años o más presentó mayor consumo sensato (58.8%) y dañino (18.8%) y el consumo dependiente fue mayor para el grupo de 25 a 34 años (40.4%).

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INTRODUCTION: Attaining an accurate diagnosis in the acute phase for severely brain-damaged patients presenting Disorders of Consciousness (DOC) is crucial for prognostic validity; such a diagnosis determines further medical management, in terms of therapeutic choices and end-of-life decisions. However, DOC evaluation based on validated scales, such as the Revised Coma Recovery Scale (CRS-R), can lead to an underestimation of consciousness and to frequent misdiagnoses particularly in cases of cognitive motor dissociation due to other aetiologies. The purpose of this study is to determine the clinical signs that lead to a more accurate consciousness assessment allowing more reliable outcome prediction. METHODS: From the Unit of Acute Neurorehabilitation (University Hospital, Lausanne, Switzerland) between 2011 and 2014, we enrolled 33 DOC patients with a DOC diagnosis according to the CRS-R that had been established within 28 days of brain damage. The first CRS-R assessment established the initial diagnosis of Unresponsive Wakefulness Syndrome (UWS) in 20 patients and a Minimally Consciousness State (MCS) in the remaining13 patients. We clinically evaluated the patients over time using the CRS-R scale and concurrently from the beginning with complementary clinical items of a new observational Motor Behaviour Tool (MBT). Primary endpoint was outcome at unit discharge distinguishing two main classes of patients (DOC patients having emerged from DOC and those remaining in DOC) and 6 subclasses detailing the outcome of UWS and MCS patients, respectively. Based on CRS-R and MBT scores assessed separately and jointly, statistical testing was performed in the acute phase using a non-parametric Mann-Whitney U test; longitudinal CRS-R data were modelled with a Generalized Linear Model. RESULTS: Fifty-five per cent of the UWS patients and 77% of the MCS patients had emerged from DOC. First, statistical prediction of the first CRS-R scores did not permit outcome differentiation between classes; longitudinal regression modelling of the CRS-R data identified distinct outcome evolution, but not earlier than 19 days. Second, the MBT yielded a significant outcome predictability in the acute phase (p<0.02, sensitivity>0.81). Third, a statistical comparison of the CRS-R subscales weighted by MBT became significantly predictive for DOC outcome (p<0.02). DISCUSSION: The association of MBT and CRS-R scoring improves significantly the evaluation of consciousness and the predictability of outcome in the acute phase. Subtle motor behaviour assessment provides accurate insight into the amount and the content of consciousness even in the case of cognitive motor dissociation.

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Aim: To evaluate the influence of ultrasonic activation (US) with different irrigant regimens in smear layer removal. Methods: One hundred bovine incisors were instrumented and divided into ten groups (n=10) according to final irrigation protocols: distilled water (DW); DW+US; 17% EDTA; QMix; 10% citric acid; 37% phosphoric acid; 17% EDTA+US; QMix+US; 10% citric acid+US; 37% phosphoric acid+US. The samples were then submitted to scanning electron microscopy where a score system was used to evaluate the images and effectiveness of proposed treatments. The data were statistically analyzed by Kruskal-Wallis and Mann-Whitney U tests for intergroup comparisons as well as the Wilcoxon and Friedman tests for intragroup comparisons at 5% significance level. Results: In the cervical third, groups 17% EDTA, QMix, 10% citric acid, 17% EDTA+US, QMix+US and 10% citric acid+US were more effective in smear layer removal (p<0.05); in the middle third, groups 17% EDTA+US and QMix+US were more effective in smear layer removal (p<0.05); in the apical third, groups 17% EDTA,17% EDTA+US and QMix+US were more effective in smear layer removal (p<0.05). Conclusions: US can aid 17% EDTA and QMix in smear layer removal at the middle third and QMix at the apical third, contributing to the cleaning of root canal system.

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El cumplimiento de medidas de bioseguridad es imprescindible en la atención a los pacientes durante los procedimientos quirúrgicos, lo cual constituye un conjunto de medidas preventivas que tienen como finalidad proteger la salud y la seguridad del profesional, así como también la del paciente y la comunidad, siendo necesario conocer las distintas medidas y técnicas asépticas, así como el uso de estos estándares para disminuir la probabilidad de adquirir infecciones cruzadas intrahospitalarias. El objetivo de la investigación es Evaluar el nivel de cumplimiento de medidas de bioseguridad por el personal de salud, Hospital Nacional Santa Rosa de Lima, Año 2015. La metodología utilizada en el estudio fue Descriptiva y de campo, en la población se incluyeron 26 profesionales los cuales son “10 cirujanos, 6 anestesistas y 10 enfermeras” que laboran dentro del área quirúrgica, en las técnicas de obtención de datos estuvieron las documentales, de campo y la observación. Los resultados obtenidos fueron procesados mediante el sistema SPSS versión 19, aceptando la Hipótesis de Investigación: el Personal de Salud del Hospital Nacional Santa Rosa de Lima tiene un alto nivel de cumplimiento en las medidas de bioseguridad y bajo la prueba estadística U de Mann Whitney se determino que no se presentan diferencias en la comparación del personal médico–anestesista, anestesista–enfermería y enfermería–médico, en el cumplimiento de las medidas durante los procedimientos quirúrgicos.

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En el presente trabajo se hace una comparación entre salbutamol y el bromuro de ipratropio en el tratamiento de pacientes con hiperreactividad bronquial del instituto salvadoreño del seguro social, de mayo a julio de 2014. Teniendo como objetivos encontrar cual de los fármacos es mas efectivos, además determinar el nivel de broncodilatación producidos por los fármacos, y observar cual de ellos presentan mayores efectos adversos. Durante la investigación, fue necesario evaluar la condición física del paciente, la estabilidad hemodinámica y la evaluación de la prueba funcional en pre, trans y post espirometria. Metodología: esta investigación es de tipo experimental y según el origen los datos fue de campo, porque se apoya en información que proveniente de la observación. La población está formada por 30 pacientes la que posteriormente se dividió en dos grupos por medio de la tabla de números aleatorios, al grupo (a) 15 se le administro salbutamol a dosis de 300mcg y al grupo (b) 15 una dosis de 60mcg de bromuro de ipratropio. Resultados obtenidos: las pruebas estadísticas que se utilizaron para poder realizar el análisis de los datos recolectados fueron: para determinar la normalidad de los datos shapiro wilk, para los datos con distribucion normal se aplico la prueba t-estudent y para los datos que no tenían una distribucion normal la prueba u de mann whitney. Para valorar las variaciones pre, trans y post espirómetria se utilizo anova y duncan, después de analizar e interpretar los datos obtenidos se puede concluir que no existe diferencia estadística significativa en el nivel de broncodilatación y la presencia de efectos adversos entre los grupos en comparación. Por lo cual se acepta la hipótesis nula y se rechaza la hipótesis de investigación.