Search results for "STATISTICS"

How Do Cancer Registries in Europe Estimate Completeness of Registration?

2008

Summary Objectives: Several methods for estimating completeness in cancer registries have been proposed. Little is known about their relative merits. Before embarking on a systematic comparison of methods we wanted to know which indicators were currently in use and whether there had been comparative investigations of estimation methods. Methods: We performed a survey among European cancer registries asking which methods for estimating completeness they used and whether they had performed comparisons of methods. Results: One hundred and ninety-five European cancer registries were contacted after identification using membership directories of the European Network of Cancer Registries (ENCR) a…

2019

Background and Purpose— Prevalence of atrial fibrillation (AF) is increasing, but the impact on overall burden of stroke is uncertain, as is the proportion that could be attributed to under anticoagulation. We did a population-based study of AF-associated stroke and a systematic review of time trends in other stroke incidence studies and of rates of premorbid anticoagulation. Methods— The proportion of incident strokes with associated AF was determined in the OXVASC (Oxford Vascular Study; 2002–2017) and in other prospective, population-based stroke incidence studies published before December 2017. Proportions were pooled by Mantel Haenszel methods, and the pooled percentage of cases with …

Gully erosion susceptibility assessment by means of GIS-based logistic regression: A case of Sicily (Italy)

2014

article i nfo Article history: This research aims at characterizing susceptibility conditions to gully erosion by means of GIS and multivariate statistical analysis. The study area is a 9.5 km 2 river catchment in central-northern Sicily, where agriculture ac- tivities are limited by intense erosion. By means of field surveys and interpretation of aerial images, we prepared a digitalmap of thespatial distribution of 260 gulliesinthestudy area.Inaddition,fromavailable thematicmaps, a 5 m cell size digital elevation model and field checks, we derived 27 environmental attributes that describe the variability of lithology, land use, topography and road position. These attributes were selected f…

Cyberbullying: diferencias en función del sexo y curso académico

2019

El cyberbullying es un problema grave y transcultural. Los estudios por lo que se refiere a la diferencia en cuanto al género y la edad de víctimas y agresores son inconsistentes. En este contexto, los objetivos del presente estudio fueron analizar si existen diferencias en la cibervictimización y ciberagresión en función del sexo (chicos y chicas), y el curso académico (1º, 2º, 3º, y 4º de la ESO). Participaron 660 adolescentes pertenecientes a cuatro institutos públicos de edades comprendidas entre los 12 y los 18 años. Los resultados muestran que no existen diferencias significativas entre chicos y chicas ni en la cibervictimización, ni en la ciberagresión. Respecto al curso académico, n…

Jerarquización y preferencia de valores en los estudiantes de secundaria = Hierarchial structuring and preference of values in the students of second…

2014

This article describes a study of the values and variables that influence hierarchical structuring in secondary school students. The main objectives are to determine which are the preferred values and to compare in what manner gender and age are related to the values of adolescents. The study is conducted with a sample (n=114) of male and female secondary school students, between 14 and 18 years old. The results show that the two variables (gender and age) are related to the subject’s values. Girls prefer final values, more abstract and internalized values; opposite to the instrumental, more egocentric and material values, preferred by boys. Regarding age influence, as they grow older, adol…

Tolerability and efficacy of high-dose furosemide and small-volume hypertonic saline solution in refractory congestive heart failure

2000

Thirty patients aged 65-85 years, with refractory New York Heart Association (NYHA) class IV congestive heart failure (CHF) were treated with an intravenous infusion of furosemide (250-2000 mg/d) and small-volume hypertonic saline solution (150 mL of 1.4-4.6% NaCl) twice a day for 6 to 12 days. A daily fluid oral intake of 1000 mL and previous cardiac therapy were maintained. Clinical signs and symptoms of CHF, such as dyspnea, edema and weakness, improved, as did severity of illness as defined by NYHA class. The infusion was well tolerated. After a 12-month follow-up, 24 patients (80%) were alive and in the NYHA class assigned on discharge from the hospital. This therapeutic combination is…

Subjective well-being key elements of Successful Aging: A study with Lifelong Learners older adults from Costa Rica and Spain.

2019

Abstract Subjective well-being is a major psychological construct in the research tradition. Along with literature, authors have distinguished between hedonic and eudaimonic well-being. The aim of this study is to determine the role of some psychosocial variables plays in the perceived well-being is conceived from a hedonic or a eudaimonic perspective. The sample consisted of 1016 people of 55 years and older in a Spanish sample and 277 people of 55 years old or older from a Costa Rican sample. Both samples were part of the Longitudinal Older Learners (LOL) study. A structural model with latent variables was estimated with Mplus. The results point out that, the traditional variables include…

Do editors have a silver bullet? an agent-based model of peer review

2014

This paper presents an agent-based model of peer review that looks at the effect of different editorial policies of referee selection. We tested four author/referee matching scenarios as follows: random selection of referees, selection of referees with a similar status to submission authors, selection of higher-skilled and lower skilled referees. We tested these scenarios against three types of referee behaviour, i.e., fair, unreliable and strategic and measured their implications for the quality and efficiency of the process. Results show that in case of randomness of referee judgment, any editorial policy is detrimental for peer review. If referees behave strategically, certain matching p…

The effect of agglomeration economies and geography on the survival of accommodation businesses in Sicily

2021

The study explores the geographical pattern of the accommodation industry in the Italian insular region of Sicily, focusing on the determinants of the risk of market exit. We adopt a standard framework of business survival analysis where agglomeration economies play an important role. We then extend the analysis by considering the role of geography to explore whether the risk of market exit depends on nearness to desirable amenities. The geography is here measured by the distance from the coast and the altitude of the place where the firm is located. When we look at the entire population of accommodation firms that started between 2010 and 2014, we find evidence that the risk of failure inc…

E-Hitz: A word frequency list and a program for deriving psycholinguistic statistics in an agglutinative language (Basque)

2007

We describe a Windows program that enables users to obtain a broad range of statistics concerning the properties of word and nonword stimuli in an agglutinative language (Basque), including measures of word frequency (at the whole-word and lemma levels), bigram and biphone frequency, orthographic similarity, orthographic and phonological structure, and syllable-based measures. It is designed for use by researchers in psycholinguistics, particularly those concerned with recognition of isolated words and morphology. In addition to providing standard orthographic and phonological neighborhood measures, the program can be used to obtain information about other forms of orthographic similarity, …