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1.
Environ Monit Assess ; 193(1): 23, 2021 Jan 03.
Artículo en Inglés | MEDLINE | ID: mdl-33389226

RESUMEN

High-rise residential developments are rapidly increasing in urban areas. Smaller residential units in this high rise bring a reduction in windows, resulting in poor indoor air ventilation. In addition, materials used in interiors can emit volatile organic compounds (VOCs), which can significantly affect human health. Since people spend 90% of their time indoors, an evaluation of indoor air quality is especially important for high-rise residential buildings with an analysis of determining factors. This study aims to measure the concentrations of VOCs, formaldehyde, and particulate matter (PM2.5 and PM10) in 9 high-rise residential buildings in Bangkok by using the accidental sampling method (n = 252) and to investigate possible important determining factors. The results show that the average concentrations of VOCs, formaldehyde, PM2.5, and PM10 in 9 high-rise residential buildings were at good to moderate levels in the indoor air quality index (IAQI) and that high pollutant concentrations were rarely found except in new constructions. Moreover, it was found that the age of buildings shows strong correlations with all pollutants (p value < 0.0001). Old buildings showed significantly lower pollutant concentrations than new and under-construction buildings at a 95% confidence level. The findings from this investigation can be used as part of sustainable well-being design guidelines for future high-rise residential developments.


Asunto(s)
Contaminantes Atmosféricos , Contaminación del Aire Interior , Compuestos Orgánicos Volátiles , Contaminantes Atmosféricos/análisis , Contaminación del Aire Interior/análisis , Monitoreo del Ambiente , Análisis Factorial , Humanos , Material Particulado/análisis , Tailandia , Compuestos Orgánicos Volátiles/análisis
2.
Commun Biol ; 4(1): 60, 2021 01 05.
Artículo en Inglés | MEDLINE | ID: mdl-33402722

RESUMEN

The basic reproduction number, R0, determines the rate of spread of a communicable disease and therefore gives fundamental information needed to plan public health interventions. Using mortality records, we estimated the rate of spread of COVID-19 among 160 counties and county-aggregates in the USA at the start of the epidemic. We show that most of the high among-county variance is explained by four factors (R2 = 0.70): the timing of outbreak, population size, population density, and spatial location. For predictions of future spread, population density and spatial location are important, and for the latter we show that SARS-CoV-2 strains containing the G614 mutation to the spike gene are associated with higher rates of spread. Finally, the high predictability of R0 allows extending estimates to all 3109 counties in the conterminous 48 states. The high variation of R0 argues for public health policies enacted at the county level for controlling COVID-19.


Asunto(s)
/epidemiología , Brotes de Enfermedades , Modelos Estadísticos , /virología , Análisis Factorial , Geografía Médica , Humanos , Densidad de Población , Vigilancia de la Población , Estados Unidos/epidemiología
3.
Health Qual Life Outcomes ; 19(1): 1, 2021 Jan 02.
Artículo en Inglés | MEDLINE | ID: mdl-33388064

RESUMEN

BACKGROUND: In a context where there is no treatment for the current COVID-19 virus, the combination of self-care behaviours together with confinement, are strategies to decrease the risk of contagion and remain healthy. However, there are no self-care measures to screen self-care activities in general population and which, could be briefly in a lockdown situation. This research aims to build and validate a psychometric tool to screen self-care activities in general population. METHODS: Firstly, an exploratory factor analysis was performed in a sample of 226 participants to discover the underlying factorial structure and to reduce the number of items in the original tool into a significant pool of items related to self-care. Later a confirmatory factor analyses were performed in a new sample of 261 participants to test for the fit and goodness of factor solutions. Internal validity, reliability, and convergent validity between its score with perceived stress and psychological well-being measures were examined on this sample. RESULTS: The exploratory analyses suggested a four-factor solution, corresponding to health consciousness, nutrition and physical activity, sleep, and intra-personal and inter-personal coping skills (14 items). Then, the four-factor structure was confirmed as the best model fit for self-care activities. The tool demonstrated good reliability, predictive validity of individuals' perception of coping with COVID-19 lockdown, and convergent validity with well-being and perceived stress. CONCLUSIONS: This screening tool could be helpful to address future evaluations and interventions to promote healthy behaviours. Likewise, this tool can be targeted to specific population self-care's needs during a scalable situation.


Asunto(s)
Adaptación Psicológica , Calidad de Vida/psicología , Autocuidado/psicología , Encuestas y Cuestionarios/normas , Adulto , Análisis Factorial , Femenino , Estado de Salud , Humanos , Masculino , Persona de Mediana Edad , Psicometría , Reproducibilidad de los Resultados , Autocuidado/normas
4.
Ecotoxicol Environ Saf ; 208: 111779, 2021 Jan 15.
Artículo en Inglés | MEDLINE | ID: mdl-33396090

RESUMEN

High levels of ammonium in groundwater is a potential threat to drinking water security and ecological status. The role of dissolved organic matter (DOM) in mobilization of natural ammonium in groundwater is crucial but the intrinsic link between them has still been poorly understood. This study used high-pressure size exclusion chromatography (HPSEC) and fluorescence excitataion-emission-matrix spectra (EEMs) with parallel factor analysis (PARAFAC) to elucidate the influence of DOM characteristics in groundwater systems having contrastive ammonium levels in Dongting Plain, central Yangtze River. The results indicate that NH4+-N concentration in groundwater of western plain (0-16.75 mg/L) are much higher compared with southern plain (0-1.5 mg/L). The groundwater in western plain is in a more reductive environment and characterized by larger molecular weight (MW) of DOM and lower polydispersity (ρ), whereas DOM with relatively small molecular weight and high polydispersity is detected in the south with a more oxidative condition. The groundwater in western plain is characterized by lower fluorescence index (f450/500) and biological index (BIX), and dominated by the high molecular weight terrestrial humic-like component and larger amounts of microbial humic-like components. Protein-like is the main component in groundwater of southern plain with higher f450/500 and BIX. The ammonium concentration in groundwater correlates well with molecular weight and increases significantly with the content of high molecular weight terrestrial humic-like component, indicating that mobilization of ammonium is more closely associated with the terrestrial organic matter of high molecular weight. This study further enriches the theory on mobilization of ammonium in Quaternary alluvial-lacustrine aquifer systems and provides theoretical basis for the local water supply security.


Asunto(s)
Compuestos de Amonio/análisis , Agua Subterránea/química , Ríos/química , China , Monitoreo del Ambiente , Análisis Factorial , Fluorescencia , Espectrometría de Fluorescencia
5.
Chemosphere ; 267: 129154, 2021 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-33338719

RESUMEN

Between November 2019 and February 2020, 53 water samples were collected along 430 km of coastline in northeastern Brazil, which was the location of an oil spill that occurred in August 2019. Synchronous fluorescence matrices (SFMs) were acquired to avoid regions affected by Raman Stokes scatterings and second harmonic signals, and then, the SFMs were converted into excitation-emission matrices (EEM) by shear transformation. The matrix coupled with parallel factor analysis (PARAFAC) was used in the study of fluorescent components present in the collected waters. A sample collected before the oil spill and another from Florianópolis-SC, 2000 km from the incident, were used as references for nonimpacted waters. In the postspill samples, 4 components were determined, with component 1 (λexc = 225 nm, λem = 475 nm) being associated with humic-like organic matter (terrestrial), component 2 (λexc = 230 nm, λem = 390 nm) being associated with humic-like organic matter (marine), component 3 (λexc = 225/295 nm, λem = 345 nm) being associated with dibenzothiophene-like components also observed in tests with crude oil samples, and component 4 (λexc = 220/280 nm, λem = 340 nm) being associated with a naphthalene-like substance. Principal component analysis (PCA) was performed on the PARAFAC scores. The distribution of samples along the 4 components was observed and compared with the reference samples.


Asunto(s)
Contaminación por Petróleo , Contaminantes Químicos del Agua , Brasil , Análisis Factorial , Sustancias Húmicas/análisis , Contaminación por Petróleo/análisis , Espectrometría de Fluorescencia , Contaminantes Químicos del Agua/análisis
6.
J Environ Sci (China) ; 101: 117-122, 2021 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-33334507

RESUMEN

Gangba sheep are known for having typical sensory characteristics attributed to free range conditions and grazing on wild plants. The genuine Gangba mutton was selected as the experimental group, and the commercial Tibetan mutton was selected as the control group, the nutritive composition of basic chemical components, amino acids and fatty acids in mutton were investigated to correlate its unique meat quality and eating satisfaction. The results showed that fatty acids were significantly higher (P<0.05) in Gangba mutton than in commercial mutton, and the higher content of flavoring amino acids (glutamic acid and aspartame) were primarily responsible for the taste attributes umami of meat juices. Moreover, the trace elements analysis in mutton and grazing factors (forage, water source and soil) were conducted, to explain the source of essential trace elements in mutton. The concentrations of essential trace elements show that the Gangba mutton was a valuable source for highly available Cu and Zn in human nutrition, and well managed with few detected of toxicity metal. The concentrations of essential trace elements in mutton are closely related to the trace elements in environmental grazing factors. In conclusion, the congenital grazing conditions (a highly mineralized water resource, natural forages and clean soils) were shown to contribute to the unique meat characteristics of Gangba sheep.


Asunto(s)
Carne , Oligoelementos , Animales , Análisis Factorial , Ácidos Grasos , Carne/análisis , Ovinos , Tibet
7.
Sci Total Environ ; 753: 141821, 2021 Jan 20.
Artículo en Inglés | MEDLINE | ID: mdl-32891993

RESUMEN

Intense human disturbance has made algal bloom a prominent environmental problem in gate-controlled urban water bodies. Urban water bodies present the characteristics of natural rivers and lakes simultaneously, whose algal blooms may manifest multi-factor interactions. Hence, effective regulation strategies require a multi-factor analysis to understand local blooming mechanisms. This study designed a holistic multi-factor analysis framework by integrating five data mining techniques. First, the Kolmogorov-Smirnov test was conducted to screen out the possible explanatory variables. Then, correlation analyses and principal component analyses were performed to identify variable collinearity and mutual causality, respectively. After collinearity and mutual causality were treated prudently by using orthogonalization and instrumental variables, multilinear regression can be properly conducted to quantify factor contributions to algae growth. Lastly, a decision tree was used innovatively to depict the limiting threshold curves of each driving factor that restricts algae growth under different circumstances. The driving factors, their contributions, and the limiting threshold curves compose the complete blooming mechanisms, thus providing a clear direction for the targeted regulation task. A typical case study was performed in Suzhou, a Chinese city with an intricate gate-controlled river network. Results confirmed that climatic factors (i.e., water temperature and solar radiation), hydrodynamic factors (i.e., flow velocity), nutrients (i.e., phosphorus and nitrogen), and external loadings contributed 49.3%, 21.7%, 21.3%, and 7.7%, respectively, to algae growth. These results indicate that a joint regulation strategy is urgently required. Future studies can focus on coupling the revealed mechanisms with an ecological model to provide a comprehensive toolkit for the optimization of an adaptive joint regulation plan under the background of global warming.


Asunto(s)
Monitoreo del Ambiente , Eutrofización , China , Ciudades , Minería de Datos , Análisis Factorial , Humanos , Lagos , Fósforo/análisis
8.
Med. clín (Ed. impr.) ; 155(12): 535-537, dic. 2020.
Artículo en Español | IBECS | ID: ibc-191728

RESUMEN

OBJETIVO: La preocupación por enfermar podría ayudar a prevenir enfermedades. El objetivo de este estudio fue analizar las propiedades psicométricas de una escala de preocupación por la COVID-19 (EPCov-19). MATERIALES Y MÉTODOS: El estudio es de tipo instrumental y se recogió información de 224 personas de nacionalidad peruana en el contexto de aislamiento social. Se realizó una adaptación de los ítems de la escala de preocupación por el cáncer. RESULTADOS: Se obtuvo una escala con propiedades psicométricas satisfactorias. Con una matriz de correlaciones policóricas se obtuvieron valores superiores al estándar en los 6 ítems (r > 0,3) y la confiabilidad fue aceptable (alfa = 0,866; IC del 95% = 0,83-0,89). El análisis paralelo sugirió la unidimensionalidad de la EPCov-19, la varianza explicada fue del 79,7% y las saturaciones fueron superiores a 0,4. Los índices de bondad de ajuste son satisfactorios (CFI = 0,995; GFI = 0,997; TLI = 0,991 y RMSEA = 0,059, IC del 95% = 0,012-0,077). CONCLUSIONES: Se presenta un instrumento válido y confiable para medir la preocupación por el contagio de COVID-19 y puede ser usados en futuros estudios


OBJECTIVE: Concern about getting sick could help prevent disease. The aim of this study was to analyze the psychometric properties of a COVID-19 concern scale (EPCov-19). MATERIALS AND METHODS: This is an instrument-based study and information was collected from 224 people of Peruvian nationality in the context of social isolation. The items of the Cancer Concern Scale were adapted for this study. RESULTS: A scale with satisfactory psychometric properties was obtained. With a matrix of polychoric correlations, values higher than the standard were obtained in all 6 items (r > 0.3) and the reliability was acceptable (alpha = 0.866; 95% CI = 0.83 - 0.89). Parallel analysis suggested unidimensionality of the EPCov-19, the variance explained was 79.7% and saturations were higher than 0.4. Goodness-of-fit índices were satisfactory (CFI = 0.995; GFI = 0.997; TLI = 0.991; and RMSEA = 0.059, 95% CI = 0.012 - 0.077). CONCLUSIONS: This is a valid and reliable instrument for measuring concern about the spread of COVID-19 and can be used in future studies


Asunto(s)
Humanos , Masculino , Femenino , Adolescente , Adulto Joven , Adulto , Persona de Mediana Edad , Anciano , Ansiedad/diagnóstico , Infecciones por Coronavirus/psicología , Neumonía Viral/psicología , Estrés Psicológico , Psicometría/instrumentación , Betacoronavirus , Adaptación Psicológica , Infecciones por Coronavirus/complicaciones , Neumonía Viral/complicaciones , Encuestas y Cuestionarios , Análisis Factorial
9.
Eur. j. psychol. appl. legal context (Internet) ; 12(2): 61-68, jul.-dic. 2020. tab
Artículo en Inglés | IBECS | ID: ibc-190650

RESUMEN

School coexistence/violence is often the subject of social alarm. There is no consensus on the prevalence of violent behavior in the classroom, but there does seem to be about its differences according to sex, socioeconomic level, or the importance of preventive interventions for its reduction. Models consider attitudes towards violence as an indicator of risk for its expression. The objectives of this study are to explore the psychometric properties of the revised version of Cuestionario de Actitudes Hacia la Violencia [Attitudes towards Violence Questionnaire] (CAHV-25) in primary and secondary education students, proposing a version of four scales and a total of 28 items, along with the exploration of their significance as a function of sex and academic cycle. A qualitative review of CAHV-25 and a psychometric study of the revised version in each of its original dimensions was carried out, obtaining the fit indicators of exploratory and confirmatory factor analysis. In addition, the scale was studied as a function of sex and educational stage se in school children (N = 600) of the Region of Murcia (Spain). The four dimensions show better psychometric properties in their revised version. Attitudes towards violence are more present in males and in secondary school. As conclusions, the proposed version optimizes the detection of attitudes towards violence in schoolchildren and suggests more specific school violence prevention programs


La convivencia/violencia escolar, a menudo, es objeto de alarma social. No parece existir consenso en la prevalencia de conductas violentas en las aulas, pero sí en sus diferencias según sexo, nivel socioeconómico o la importancia de las intervenciones preventivas para su disminución. Los modelos sitúan a las actitudes hacia la violencia como un indicador de riesgo para la manifestación de dichas conductas. Los objetivos del presente estudio son explorar las propiedades psicométricas de la versión ampliada del Cuestionario de Actitudes Hacia la Violencia (CAHV-25) en alumnos de Educación Primaria y Secundaria, proponiendo una versión dividida en cuatro escalas y 28 ítems en total, junto a la exploración de la significación según sexo y etapa académica. Se ha llevado a cabo una revisión cualitativa del cuestionario CAHV-25 y se realizó un estudio psicométrico de la misma para cada una de sus dimensiones originales obteniendo los indicadores de ajuste de Análisis Factorial Exploratorio y Confirmatorio en menores de Educación Primaria y Secundaria (N = 600) de la Región de Murcia (España). Los resultados indican que las cuatro dimensiones tienen mejores propiedades psicométricas en su versión revisada. Las actitudes hacia la violencia son mayores en varones y en Secundaria. Se concluye que la versión propuesta permite maximizar la detección de actitudes hacia la violencia en menores escolarizados, sirviendo de base para el planteamiento de posibles programas de prevención de violencia escolar más específicos


Asunto(s)
Humanos , Masculino , Femenino , Niño , Adolescente , Encuestas y Cuestionarios , Estudiantes/psicología , Violencia/psicología , Actitud , Análisis Factorial , Conducta del Adolescente , Estudios Transversales , Prevalencia , Psicometría
10.
Ansiedad estrés ; 26(2/3): 174-180, jul.-dic. 2020. tab, graf
Artículo en Español | IBECS | ID: ibc-ET6-1784

RESUMEN

INTRODUCCIÓN Y OBJETIVOS: La COVID-19 ha generado consecuencias negativas para la salud mental de las personas. Este es el caso del Perú, uno de los países latinoamericanos más afectados por la pandemia. En este sentido, el objetivo del estudio fue traducir y validar la Coronavirus Anxiety Scale (CAS) al español. MATERIAL Y MÉTODO: Los participantes fueron 704 estudiantes universitarios de ciencias de la salud (Medad = 23.39 años, DE = 3.45) a quienes se les administró el CAS en español, el Mental Health Inventory-5 y el Patient Health Questionnaire-2 item. El CAS se tradujo al español mediante el método hacia adelante y hacia atrás. Se examinaron la fiabilidad y las evidencias de validez basada en la estructura interna y relación con otras variables. RESULTADOS: El análisis factorial confirmó la estructura factorial unidimensional del CAS (χ2 = 7.62, gl = 5, p = .18, χ2/df = 1.52, CFI = .99, RMSEA = .03 [CI90% .00, .06]; SRMR = .02, WRMR = .52); además las cargas factoriales fueron grandes y significativas (de .68 a .87). Los cinco ítems del CAS mostraron correlaciones ítems test total corregido aceptables (de .64 a .74). La confiabilidad por consistencia interna fue buena (ω = .89; αordinal = .89). La evidencia de validez con base en la relación con otras variables del CAS fue respaldada por la correlación positiva con la depresión (r = .52, p < .01) y negativa con el bienestar subjetivo (r = -.50, p < .01). Además, la depresión media la relación entre la ansiedad por la COVID-19 y el bienestar subjetivo (valor bootstrap = - .24, IC 95% = - .28, - .20). CONCLUSIÓN: La versión en español del CAS posee evidencias de validez y confiabilidad para medir la ansiedad por la COVID-19 en una muestra de universitarios peruanos


INTRODUCTION AND OBJECTIVES: COVID-19 has generated negative consequences for people's mental health. This is the case of Peru, one of the Latin American countries most affected by the pandemic. In this sense, the objective of the study was to translate and validate the Coronavirus Anxiety Scale (CAS) into Spanish. MATERIAL AND METHOD: The participants were 704 university students of health sciences (Mage = 23.39 years, SD = 3.45) who were administered the CAS in Spanish, the Mental Health Inventory-5 and the Patient Health Questionnaire-2 item. The CAS was translated into Spanish using the forward and backward method. Reliability and evidence of validity based on internal structure and relationship with other variables were examined. RESULTS: The factor analysis confirmed the one-dimensional factor structure of the CAS (χ2 = 7.62, df = 5, p = .18, χ2 / gl = 1.52, CFI = .99, RMSEA = .03 [90% CI .00, .06]; SRMR = .02, WRMR = .52); In addition, the factor loadings were large and significant (from .68 to .87). The five CAS items showed acceptable corrected total test item correlations (from .64 to .74). Reliability due to internal consistency was good (ω = .89; αordinal = .89). The validity evidence based on the relationship with other CAS variables was supported by the positive correlation with depression (r = .52, p < .01) and negative with subjective well-being (r = -.50, p < . 01). Furthermore, depression mediates the relationship between COVID-19 anxiety and subjective well-being (bootstrap value = - .24, 95% CI = - .28, - .20). CONCLUSION: The Spanish version of the CAS has evidence of validity and reliability to measure anxiety by COVID-19 in a sample of Peruvian university students


Asunto(s)
Humanos , Masculino , Femenino , Adulto Joven , Adulto , Traducciones , Infecciones por Coronavirus/psicología , Ansiedad/diagnóstico , Encuestas y Cuestionarios/normas , Estudios Transversales , Análisis Factorial , Salud Mental , Factores Socioeconómicos , Reproducibilidad de los Resultados , Cuestionario de Salud del Paciente/normas , Perú , Estudiantes/psicología
11.
Urologiia ; (6): 23-27, 2020 Dec.
Artículo en Ruso | MEDLINE | ID: mdl-33377674

RESUMEN

AIM: to identify risk factors and assess their significance in the development and prognosis of acute kidney injury in urological patients. MATERIAL AND METHODS: The data of 6272 patients treated in the Department of Urology and Intensive care Unit were analyzed retro- and prospectively. Factorial and linear regression analyzes of the primary diagnostic criteria were carried out, which allowed to establish an impact of individual signs and their combination in determining the risk of developing or diagnosing existing renal dysfunction in the absence of clinical manifestations. RESULTS: Statistical analysis has demonstrated the high significance of some diagnostic criteria (gender, increased body mass index, duration of the disease, comorbidities, hyperthermia, epitheliuria, proteinuria) influencing the development of acute kidney injury in patients with urolithiasis complicated by renal colic or secondary pyelonephritis. The factor load of each criterion allowed to establish the worst prognosis and the risk of progression of acute kidney injury in patients with frequent recurrences of secondary pyelonephritis, episodes of renal colic over the last 5 years, a combination of arterial hypertension and diabetes mellitus who underwent extracorporeal shock-wave lithotripsy or pyelolithotomy with nephrostomy. These risk factors require for additional pharmacological protective therapy aimed at preventing the progression of acute kidney injury. CONCLUSIONS: Decreased urine output and serum creatinine levels as criteria for acute kidney injury (according to KDIGO) do not allow to fully assess the risk of renal dysfunction, which requires to consider additional criteria (gender, increased body mass index, duration of the disease, comorbidities, hyperthermia, epitheliuria, proteinuria) when taking history during the initial examination of a patient with upper urinary tract pathology.


Asunto(s)
Lesión Renal Aguda , Lesión Renal Aguda/diagnóstico , Lesión Renal Aguda/etiología , Lesión Renal Aguda/terapia , Análisis Factorial , Humanos , Riñón , Pronóstico , Factores de Riesgo
12.
Zhonghua Yi Xue Za Zhi ; 100(40): 3174-3178, 2020 Nov 03.
Artículo en Chino | MEDLINE | ID: mdl-33142402

RESUMEN

Objective: To explore correlative factors and construct predictive model of intestinal flora imbalance in patients with acute exacerbation of Chronic Obstructive Pulmonary Disease (COPD). Methods: The patients in acute exacerbation stage of COPD (AECOPD) hospitalized in Yixing People's Hospital from January 1 to December 31, 2019 were included. According to the clinical symptoms and results of fecal examination, the subjects were divided into case group (n=45) and control group (n=83). Multivariate logistic regression was used to analyze the correlative factors of intestinal flora imbalance in AECOPD patients. The prediction model of intestinal flora imbalance in patients with AECOPD was constructed according to the results of factor logistic regression analysis, and the effectiveness of the prediction model was evaluated by receiver operating characteristic (ROC) curve analysis. Results: The ages of subjects in case group and control group were (76±9) and (74±8) years old, respectively, among which males accounted for 80.0% (36/45) and 69.9% (58/83), respectively. The multivariate logistic regression model analysis showed that serum albumin concentration, frequency of acute exacerbation ≥2 times/year, complicated with chronic cor pulmonale and diabetes mellitus were correlative factors of intestinal flora imbalance in patients with AECOPD. The OR (95%CI) were 0.98 (0.80-0.97), 3.70 (1.79-11.72), 2.62 (1.46-10.80) and 3.85 (1.17-8.58), respectively. The prediction model of intestinal flora imbalance was logit P=3.858-0.13×serum albumin consentration+1.52×acute exacerbation ≥2 times/year+1.379×chronic cor pulmonale+1.155×diabetes mellitus. The area under the ROC curve of this model was 0.847 and the sensitivity and specificity of the prediction model were 88.9% and 71.1%, respectively. Conclusions: Serum albumin, frequency of acute exacerbation ≥2 times/year, complicated with chronic cor pulmonale and diabetes mellitus are correlative factors of intestinal flora imbalance in patients with AECOPD. The predictive model shows high clinical value in predicting intestinal flora imbalance in patients with AECOPD.


Asunto(s)
Microbioma Gastrointestinal , Enfermedad Pulmonar Obstructiva Crónica , Anciano , Anciano de 80 o más Años , Progresión de la Enfermedad , Análisis Factorial , Humanos , Modelos Logísticos , Masculino , Curva ROC
13.
PLoS One ; 15(11): e0241948, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-33152033

RESUMEN

The mandatory home confinement of the Spanish population, implemented in response to the COVID-19 pandemic, presents a unique opportunity to study the use and influence of Information and Communication Technologies (ICT) in people's perception of quality of life during this exceptional situation. This article adapts and validates a psychometric scale designed to identify and measure the main dimensions of the Quality of Life construct perceived through ICT use. To this end, an exploratory and transversal study has been carried out in Spain on a sample of 2,346 participants. Data processing has been carried out with SPSS and EQS. The results provide evidence of the reliability and psychometric quality on the scale, which exhibits adequate consistency that facilitates its application. The confirmatory factor analysis showed a hierarchical model of three correlated factors that account for the dimensions "Satisfaction with life", "Emotional support" and "Social support", which have enough correlation to measure the personal perception of quality of life associated with ICT use and are consistent with previous psychometric studies. The results of the TICO scale indicate that more than 70% of the sample feel ICT have united their family during home confinement and more than 45% experience happy feelings when they use ICT. In home confinement, ICT use has improved users' quality of life, mainly their satisfaction with life and social and family support.


Asunto(s)
Infecciones por Coronavirus , Tecnología de la Información , Pandemias , Satisfacción Personal , Neumonía Viral , Calidad de Vida , Cuarentena/psicología , Adolescente , Adulto , Anciano , Betacoronavirus , Estudios Transversales , Análisis Factorial , Femenino , Humanos , Masculino , Persona de Mediana Edad , Psicometría , Apoyo Social , España , Encuestas y Cuestionarios , Adulto Joven
14.
Annu Int Conf IEEE Eng Med Biol Soc ; 2020: 2824-2828, 2020 07.
Artículo en Inglés | MEDLINE | ID: mdl-33018594

RESUMEN

The brain functional connectivity network is complex, generally constructed using correlations between the regions of interest (ROIs) in the brain, corresponding to a parcellation atlas. The brain is known to exhibit a modular organization, referred to as "functional segregation." Generally, functional segregation is extracted from edge-filtered, and optionally, binarized network using community detection and clustering algorithms. Here, we propose the novel use of exploratory factor analysis (EFA) on the correlation matrix for extracting functional segregation, to avoid sparsifying the network by using a threshold for edge filtering. However, the direct usability of EFA is limited, owing to its inherent issues of replication, reliability, and generalizability. In order to avoid finding an optimal number of factors for EFA, we propose a multiscale approach using EFA for node-partitioning, and use consensus to aggregate the results of EFA across different scales. We define an appropriate scale, and discuss the influence of the "interval of scales" in the performance of our multiscale EFA. We compare our results with the state-of-the-art in our case study. Overall, we find that the multiscale consensus method using EFA performs at par with the state-of-the-art.Clinical relevance: Extracting modular brain regions allows practitioners to study spontaneous brain activity at resting state.


Asunto(s)
Encéfalo , Imagen por Resonancia Magnética , Consenso , Análisis Factorial , Reproducibilidad de los Resultados
15.
Stud Health Technol Inform ; 273: 123-128, 2020 Sep 04.
Artículo en Inglés | MEDLINE | ID: mdl-33087601

RESUMEN

Type 2 diabetes is one of the most common chronic diseases in the world. World Diabetes Federation experts predict that the diabetes patients' number by 2035 will increase by 205 million to reach 592 million. For health care, this diabetes type is one of the highest priority problems. This disease is associated with many concomitant diseases leading to early disability and high cardiovascular risk. A severity disease indicator is the degree of carbohydrate metabolism compensation. Decompensated and subcompensated carbohydrate metabolism patients have increased cardiovascular risks. Therefore, it is important to be able to select the right therapy to control carbohydrate metabolism. In this study, we propose a new method for selecting the optimal therapy automatically. The method includes creating personal optimal therapies. This kind of therapy has the highest probability of compensating carbohydrate metabolism for a patient within a six-month. The method includes models for predicting the results of different therapies. It is based on data from the previous medical history and current medical indicators of patients. This method provides high-quality predictions and medical recommendations. Therefore, medical professionals can use this method as part of the Support and Decision-Making Systems for working with T2DM patients.


Asunto(s)
Diabetes Mellitus Tipo 2 , Metabolismo de los Hidratos de Carbono , Análisis Factorial , Humanos , Aprendizaje Automático
16.
Lancet HIV ; 7(10): e711-e720, 2020 10.
Artículo en Inglés | MEDLINE | ID: mdl-33010243

RESUMEN

Despite a large and growing body of literature on sexual and reproductive health (SRH) and HIV integration, the drivers of integration of SRH and HIV services, from a health systems perspective, are not well understood. These drivers include complex so-called hardware (structural and resource) and software (values and norms, and human relations and interactions) factors. Two groups of software factors emerge as essential enablers of effective integration of SRH and HIV services that often interact with systems hardware: (1) leadership, management, and governance processes and (2) provider motivation, agency, and relationships. Evidence suggests the potential for software elements that are essential enablers to overcome some of the obstacles posed by the non-integration of health system hardware elements (eg, financing, guidelines, and commodity supplies). These enabling factors include flexible decision making, inclusive management, and support in motivating frontline staff who can work with agency as a team. Improved software, even within constrained hardware (especially in low-income and middle-income countries), can directly contribute to improved SRH and HIV service delivery.


Asunto(s)
Prestación Integrada de Atención de Salud , Infecciones por VIH/epidemiología , Servicios de Salud Reproductiva , Salud Sexual , África del Sur del Sahara/epidemiología , Toma de Decisiones , Análisis Factorial , Personal de Salud , Humanos , Vigilancia en Salud Pública , Responsabilidad Social
17.
PLoS One ; 15(10): e0238443, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-33017446

RESUMEN

For the complicated operation process, many risk factors, and long cycle of urban logistics, it is difficult to manage the security of urban logistics and it enhances the risk. Therefore, to study a set of effective management mode for the safe operation of urban logistics and improve the risk prediction mechanism, is the primary research item of urban logistics security management. This paper summarizes the risk factors to public security in the process of urban logistics, including pick up, warehouse storage, transport, and the end distribution. Generalized regression neural network (GRNN) is combined with particle swarm optimization (PSO) to predict accidents, and the Apriori algorithm is used to analyze the combination of high-frequency risk factors. The results show that the method of combining GRNN with PSO is effective in accident prediction and has a powerful generalization ability. It can prevent the occurrence of unnecessary urban logistics public accidents, improve the ability of relevant departments to deal with emergency incidents, and minimize the impact of urban logistics accidents on social and public security.


Asunto(s)
Planificación de Ciudades , Medidas de Seguridad/organización & administración , Prevención de Accidentes , Accidentes , Algoritmos , China , Ciudades , Urgencias Médicas , Análisis Factorial , Humanos , Redes Neurales de la Computación , Organización y Administración , Factores de Riesgo
18.
Artículo en Inglés | MEDLINE | ID: mdl-33114651

RESUMEN

AIM: To develop the Self-Care in COVID-19 (SCOVID) scale and to test its psychometric characteristics in the general population. METHODS: We tested SCOVID scale content validity with 19 experts. For factorial and construct validity, reliability, and measurement error, we administered the 20-item SCOVID scale to a sample of 461 Italians in May/June 2020 (mean age: 48.8, SD ± 15.8). RESULTS: SCOVID scale item content validity ranged between 0.85-1.00, and the total scale content validity was 0.94. Confirmatory factor analysis supported SCOVID scale factorial validity (comparative fit index = 0.91; root mean square error of approximation = 0.05). Construct validity was supported by significant correlations with other instrument scores measuring self-efficacy, positivity, quality of life, anxiety, and depression. Reliability estimates were good with factor score determinacy, composite reliability, global reliability index, Cronbach's alpha, and test-retest reliability ranging between 0.71-0.91. The standard error of measurement was adequate. CONCLUSIONS: The SCOVID scale is a new instrument measuring self-care in the COVID-19 pandemic with adequate validity and reliability. The SCOVID scale can be used in practice and research for assessing self-care in the COVID-19 pandemic to preventing COVID-19 infection and maintaining wellbeing in the general population.


Asunto(s)
Infecciones por Coronavirus , Pandemias , Neumonía Viral , Psicometría , Autocuidado , Betacoronavirus , Infecciones por Coronavirus/psicología , Análisis Factorial , Humanos , Italia , Persona de Mediana Edad , Neumonía Viral/psicología , Calidad de Vida , Reproducibilidad de los Resultados , Encuestas y Cuestionarios
19.
Environ Monit Assess ; 192(11): 727, 2020 Oct 24.
Artículo en Inglés | MEDLINE | ID: mdl-33098456

RESUMEN

Many source apportionment models have been applied to identify pollution sources, and differences often exist in the diagnostic results. The reasons causing these differences have not been fully elucidated. In this study, three receptor models, principal component analysis-multiple linear regression (PCA-MLR), positive matrix factorization (PMF), and factor analysis-nonnegative constraints (FA-NNC), were compared and applied for the analysis of 16 EPA priority polycyclic aromatic hydrocarbons (PAHs) adsorbed in street dust samples from Harbin City (China). The differences in the results were caused by different calculation approaches, including matrix decomposition, variable grouping extraction, and nonnegative constraints, especially between PCA-MLR and the other two models. PCA-MLR has no nonnegative constraints, making PCA-MLR less similar to the real world than the other two. Both PMF and FA-NNC have a nonnegative constraint process, which may be the main reason why their results were much more similar to each other than to those of PCA-MLR. PCA-MLR distinguishes variables into several groups that have the greatest variances from each other, whereas the other two methods find similarities among variables and extract them. In the case study of Harbin City, the contributions of mobile and industrial sources ranged from 47 to 69%, and the contributions of coal and other sources ranged from 30 to 52%. The recognized types of pollution sources were generally equivalent, but the proportional contributions were different. PCA-MLR performed best in calculating contributions, whereas PMF and FA-NNC were better in terms of source diagnosis.


Asunto(s)
Hidrocarburos Policíclicos Aromáticos , China , Ciudades , Polvo , Monitoreo del Ambiente , Análisis Factorial , Modelos Lineales , Hidrocarburos Policíclicos Aromáticos/análisis , Análisis de Componente Principal
20.
PLoS One ; 15(10): e0239712, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-33112883

RESUMEN

Relationship dissolution can cause declines in emotional well-being, particularly if there are children involved. Individuals' capacity to cope with the pragmatics of the situation, such as agreeing childcare arrangements, can be impaired. Before now, there has been no psychometric test to evaluate individuals' emotional readiness to cope with these demands. This paper presents a model of emotional adaptation in the context of relationship dissolution and its key assumptions, and validates the Emotional Adaptation to Relationship Dissolution Assessment (EARDA). In Study 1 (Sample 1, n = 573 separated parents, Sample 2, n = 199 mix of parents and non-parents), factor analyses support the EARDA as a unidimensional scale with good reliability. In Study 2 (using Sample 1, and Sample 3, n = 156 separated parents) the convergent, discriminant, concurrent criterion-related, and incremental validity of the EARDA were supported by tests of association with stress, distress, attachment style, and co-parenting communication and conflict. In Study 3, the nomological network of emotional adaptation to relationship dissolution was explored in Sample 2 using cluster analysis and multi-dimensional scaling (MDS). Emotional adaptation clustered with positive traits and an outward focus, and was negatively associated with negative traits and an inward focus. Emotional adaptation was conceptually located in close proximity to active and adaptive coping, and furthest away from maladaptive coping. In Study 4 (n = 30 separated parents embarking on mediation), high, medium, and low emotional adaptation to relationship dissolution categories correlated highly with mediators' professional judgement, offering triangulated face validity. Finally, in Study 5, EARDA scores were found to mediate between separation characteristics (time since break up, whether it was a shock, and who initiated the break up) and co-parenting conflict in Sample 1, supporting the proposed model. The theoretical innovation of this work is the introduction of a new construct that bridges the gap between relationship dissolution and co-parenting. Practical implications include the use of the measure proposed to triage levels of support in a family law setting.


Asunto(s)
Ajuste Emocional/fisiología , Emociones/fisiología , Responsabilidad Parental/psicología , Adaptación Psicológica , Adulto , Análisis Factorial , Femenino , Humanos , Relaciones Interpersonales , Masculino , Persona de Mediana Edad , Modelos Teóricos , Relaciones Padres-Hijo , Padres/psicología , Psicometría , Reproducibilidad de los Resultados , Estrés Psicológico/psicología , Encuestas y Cuestionarios
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