Search results for "Proportional odds"
showing 6 items of 6 documents
How the Covid-19 Pandemic Is Changing Online Food Shopping Human Behaviour in Italy
2020
The advent of the Internet has significantly changed consumption patterns and habits. Online grocery shopping is a way of purchasing food products using a web-based shopping service. The current COVID-19 pandemic is determining a rethinking of purchase choice elements and of consumers&rsquo
What keeps young adults in permanent poverty? A comparative analysis using ECHP
2009
Abstract Previous studies suggest that there are strong differences in the rates of youth poverty across European countries. Rather surprisingly, it is found to be high in Scandinavian countries, and relatively speaking, lower in Mediterranean and Anglo-Saxon countries. This somewhat unexpected finding prompts the question whether the incidence of poverty is an appropriate measure of youth disadvantage. Instead of considering poverty rates we consider the length of recorded poverty spells, taking into account explicitly the temporal sequencing of the episodes of poverty. Using the European Community Household Panel, individuals are classified into different groups of poverty permanence, eac…
Regression models for multivariate ordered responses via the Plackett distribution
2008
AbstractWe investigate the properties of a class of discrete multivariate distributions whose univariate marginals have ordered categories, all the bivariate marginals, like in the Plackett distribution, have log-odds ratios which do not depend on cut points and all higher-order interactions are constrained to 0. We show that this class of distributions may be interpreted as a discretized version of a multivariate continuous distribution having univariate logistic marginals. Convenient features of this class relative to the class of ordered probit models (the discretized version of the multivariate normal) are highlighted. Relevant properties of this distribution like quadratic log-linear e…
Flexible latent trait aggregation to analyze employability after the Ph.D. in Italy
2015
The analysis of satisfaction, employability and economic perspectives after the Ph.D. in Italy has not received adequate attention in the past, especially in terms of comparison among universities. To analyze these aspects, in this paper we consider data from the survey ‘Statistica in TEma di Laureati e LAvoro’ on doctors who achieved the title on 2007, 2008 and 2009 [CILEA, Laureati STELLA, indagine occupazionale post-dottorato, dottori di ricerca 2007–2008, Tech. Rep., CILEA, Segrate, 2010; CILEA,Laureati STELLA, indagine occupazionale post-dottorato, dottori di ricerca 2008–2009, Tech. Rep., CILEA, Segrate, 2011]. To deal with the complex, multidimensional nature of the concept, we propo…
LA "SOFFERENZA FORMATIVA": UN'ANALISI PER COORTE DI IMMATRICOLATI
2007
La riforma universitaria entrata in vigore nell’a.a. 2001/02 ha portato sostanziali cambiamenti nel sistema accademico. Tra questi, l’introduzione dei crediti formativi ha avuto l’obiettivo di riformulare il criterio di valutazione della performance dello studente con l’auspicio, anche, della riduzione dei tempi impiegati per conseguire il titolo. Dopo circa sei anni ci si comincia ad interrogare sull’impatto che tale riforma ha avuto e a valutarne l’efficacia. Gli aspetti da dover tenere in considerazione sono molteplici e il presente lavoro ha voluto focalizzare l’attenzione sulla performance universitaria degli studenti e le sue determinanti. Prendendo in considerazione la coorte di imma…
Poverty Permanence Among European Youth
2008
Previous studies suggest that Scandinavian countries are the ones with the highest rates of youth poverty in Europe. This somewhat unexpected finding prompts the question whether the incidence of poverty is an appropriate measure of youth disadvantage. Instead of considering poverty rates we define here youth disadvantage in terms of the number of periods an individual is recorded to be below the poverty line. Using the European Community Household Panel, individuals are classified into different groups of poverty permanence, each reflecting severity of social disadvantage. Based on these categories we implement a generalized ordinal logit model to assess the various factors associated with…