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Mostreig en poblacions ocultes mitjançant Time-Location Sampling

Authors: Montoliu Gimenez, Alexandra;

Mostreig en poblacions ocultes mitjançant Time-Location Sampling

Abstract

En aquest treball s ha prensentat una metodologia de mostreig innovadora que no està descrita a la teoria clàssica de mostrejos i que cada vegada s'utilitza en més àmbits, ja que ha demostrat ser un mostreig adequat per reclutar individus de poblacions ocultes. En l anàlisi de dades obtingudes a partir d un mostreig Time-Location Sampling s ha de tenir en compte la probabilitat de selecció dels individus en el lloc de reclutament, la qual cosa comporta que s ha de realitzar una anàlisi de dades ponderades. En aquesta memòria s han revisat els fonaments estadístics de la metodologia Time-Location Sampling, s ha revisat les propostes d estimador de probabilitat de selecció existents a la literatura i també s ha presentat una proposta personal d estimador de probabilitat de selecció. El rendiment d aquesta nova proposta s ha avaluat analitzant les dades d un estudi europeu (SIALON II) que té com objectiu estimar la prevalença del VIH en la població d homes que tenen sexe amb homes, i s ha completat mitjançant un estudi de simulació.

Centre d’Estudis Epidemiològics sobre les Infeccions de Transmissió Sexual i SIDA de Catalunya

Country
Spain
Keywords

sample surveys, Poblacions ocultes, Classificació AMS::62 Statistics::62D05 Sampling theory, sample surveys, Classificació AMS::62 Statistics::62D05 Sampling theory, Àrees temàtiques de la UPC::Matemàtiques i estadística::Estadística matemàtica, :Matemàtiques i estadística::Estadística matemàtica [Àrees temàtiques de la UPC], Sampling (Statistics), Venue-based Sampling, Time-Location Sampling, Ponderació mostral, Mostreig (Estadística), :62 Statistics::62D05 Sampling theory, sample surveys [Classificació AMS], Time-space Sampling

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
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