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Increasing number of teeth present in a quasi-longitudinal study in adults: a methodological note.

Identifieur interne : 003B34 ( PubMed/Corpus ); précédent : 003B33; suivant : 003B35

Increasing number of teeth present in a quasi-longitudinal study in adults: a methodological note.

Auteurs : A A Schuller ; D. Holst

Source :

Community dentistry and oral epidemiology [ 0301-5661 ] ; 1998.

RBID : pubmed:9669600

English descriptors

KwdEn :
- Adult, Aging, Bias, Cohort Studies, Humans, Jaw, Edentulous (epidemiology), Longitudinal Studies, Middle Aged, Mouth, Edentulous (epidemiology), Norway (epidemiology), Research Design, Rural Health (statistics & numerical data), Tooth (pathology), Tooth Loss (epidemiology), Urban Health (statistics & numerical data).
MESH :
- epidemiology : Jaw, Edentulous, Mouth, Edentulous, Norway, Tooth Loss.
- pathology : Tooth.
- statistics & numerical data : Rural Health, Urban Health.
- Adult, Aging, Bias, Cohort Studies, Humans, Longitudinal Studies, Middle Aged, Research Design.

Abstract

This paper discusses the impossible result of an increase in the number of teeth present in a quasi-longitudinal study of an adult population. In 1983 and 1994, random samples were drawn from birth cohorts 1939-48 and 1930-38. The paradoxical result that adults acquired new teeth in the quasi-longitudinal study gave rise to questions about the comparability of the two samples. Four main sources of failure in comparability are described and discussed: instrumental stability, criteria consistency, response bias, and compositional change in aging cohorts. The lower response rate among persons with two edentulous jaws, and possibly among persons with one dentate jaw, was concluded to be the main reason for the increase in the overall group median and mean number of teeth present. In general, in studies with a similar study design, problems of comparability between the samples demand one's attention and should therefore be carefully evaluated. Compositional change of the population as a source of failure in sample comparability cannot be avoided, while the other three sources (instrumental stability, criteria consistency, response bias) can largely be avoided by careful planning and efficient use of resources.

PubMed: 9669600

Links to Exploration step

pubmed:9669600

Le document en format XML

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<affiliation><nlm:affiliation>Institute of Community Dentistry, Faculty of Dentistry, University of Oslo, Blindern, Norway. schuller@odont.uio.no</nlm:affiliation>
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<author><name sortKey="Holst, D" sort="Holst, D" uniqKey="Holst D" first="D" last="Holst">D. Holst</name>
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<term>Jaw, Edentulous (epidemiology)</term>
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<term>Norway (epidemiology)</term>
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<term>Urban Health (statistics & numerical data)</term>
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<keywords scheme="MESH" qualifier="epidemiology" xml:lang="en"><term>Jaw, Edentulous</term>
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<front><div type="abstract" xml:lang="en">This paper discusses the impossible result of an increase in the number of teeth present in a quasi-longitudinal study of an adult population. In 1983 and 1994, random samples were drawn from birth cohorts 1939-48 and 1930-38. The paradoxical result that adults acquired new teeth in the quasi-longitudinal study gave rise to questions about the comparability of the two samples. Four main sources of failure in comparability are described and discussed: instrumental stability, criteria consistency, response bias, and compositional change in aging cohorts. The lower response rate among persons with two edentulous jaws, and possibly among persons with one dentate jaw, was concluded to be the main reason for the increase in the overall group median and mean number of teeth present. In general, in studies with a similar study design, problems of comparability between the samples demand one's attention and should therefore be carefully evaluated. Compositional change of the population as a source of failure in sample comparability cannot be avoided, while the other three sources (instrumental stability, criteria consistency, response bias) can largely be avoided by careful planning and efficient use of resources.</div>
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<DateRevised><Year>2017</Year>
<Month>11</Month>
<Day>16</Day>
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<Issue>3</Issue>
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<Month>Jun</Month>
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<Title>Community dentistry and oral epidemiology</Title>
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<ArticleTitle>Increasing number of teeth present in a quasi-longitudinal study in adults: a methodological note.</ArticleTitle>
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<Abstract><AbstractText>This paper discusses the impossible result of an increase in the number of teeth present in a quasi-longitudinal study of an adult population. In 1983 and 1994, random samples were drawn from birth cohorts 1939-48 and 1930-38. The paradoxical result that adults acquired new teeth in the quasi-longitudinal study gave rise to questions about the comparability of the two samples. Four main sources of failure in comparability are described and discussed: instrumental stability, criteria consistency, response bias, and compositional change in aging cohorts. The lower response rate among persons with two edentulous jaws, and possibly among persons with one dentate jaw, was concluded to be the main reason for the increase in the overall group median and mean number of teeth present. In general, in studies with a similar study design, problems of comparability between the samples demand one's attention and should therefore be carefully evaluated. Compositional change of the population as a source of failure in sample comparability cannot be avoided, while the other three sources (instrumental stability, criteria consistency, response bias) can largely be avoided by careful planning and efficient use of resources.</AbstractText>
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Increasing number of teeth present in a quasi-longitudinal study in adults: a methodological note.

Increasing number of teeth present in a quasi-longitudinal study in adults: a methodological note.

Source :

English descriptors

Abstract

Links to Exploration step

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri

Pour générer des pages wiki