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Article: Age, period, and cohort analysis of regular dental care behavior and edentulism: A marginal approach

TitleAge, period, and cohort analysis of regular dental care behavior and edentulism: A marginal approach
Authors
Issue Date2011
PublisherBioMed Central Ltd.. The Journal's web site is located at http://www.biomedcentral.com/bmcoralhealth/
Citation
Bmc Oral Health, 2011, v. 11 n. 1 How to Cite?
AbstractBackground: To analyze the regular dental care behavior and prevalence of edentulism in adult Danes, reported in sequential cross-sectional oral health surveys by the application of a marginal approach to consider the possible clustering effect of birth cohorts.Methods: Data from four sequential cross-sectional surveys of non-institutionalized Danes conducted from 1975-2005 comprising 4330 respondents aged 15+ years in 9 birth cohorts were analyzed. The key study variables were seeking dental care on an annual basis (ADC) and edentulism. For the analysis of ADC, survey year, age, gender, socio-economic status (SES) group, denture-wearing, and school dental care (SDC) during childhood were considered. For the analysis of edentulism, only respondents aged 35+ years were included. Survey year, age, gender, SES group, ADC, and SDC during childhood were considered as the independent factors. To take into account the clustering effect of birth cohorts, marginal logistic regressions with an independent correlation structure in generalized estimating equations (GEE) were carried out, with PROC GENMOD in SAS software.Results: The overall proportion of people seeking ADC increased from 58.8% in 1975 to 86.7% in 2005, while for respondents aged 35 years or older, the overall prevalence of edentulism (35+ years) decreased from 36.4% in 1975 to 5.0% in 2005. Females, respondents in the higher SES group, in more recent survey years, with no denture, and receiving SDC in all grades during childhood were associated with higher probability of seeking ADC regularly (P < 0.05). The interaction of SDC and age (P < 0.0001) was significant. The probabilities of seeking ADC were even higher among subjects with SDC in all grades and aged 45 years or older. Females, older age group, respondents in earlier survey years, not seeking ADC, lower SES group, and not receiving SDC in all grades were associated with higher probability of being edentulous (P < 0.05).Conclusions: With the use of GEE, the potential clustering effect of birth cohorts in sequential cross-sectional oral health survey data could be appropriately considered. The success of Danish dental health policy was demonstrated by a continued increase of regular dental visiting habits and tooth retention in adults because school dental care was provided to Danes in their childhood. © 2011 Li et al; licensee BioMed Central Ltd.
Persistent Identifierhttp://hdl.handle.net/10722/133563
ISSN
2015 Impact Factor: 1.21
2015 SCImago Journal Rankings: 0.616
PubMed Central ID
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorLi, KYen_HK
dc.contributor.authorWong, MCMen_HK
dc.contributor.authorLam, KFen_HK
dc.contributor.authorSchwarz, Een_HK
dc.date.accessioned2011-05-24T02:10:37Z-
dc.date.available2011-05-24T02:10:37Z-
dc.date.issued2011en_HK
dc.identifier.citationBmc Oral Health, 2011, v. 11 n. 1en_HK
dc.identifier.issn1472-6831en_HK
dc.identifier.urihttp://hdl.handle.net/10722/133563-
dc.description.abstractBackground: To analyze the regular dental care behavior and prevalence of edentulism in adult Danes, reported in sequential cross-sectional oral health surveys by the application of a marginal approach to consider the possible clustering effect of birth cohorts.Methods: Data from four sequential cross-sectional surveys of non-institutionalized Danes conducted from 1975-2005 comprising 4330 respondents aged 15+ years in 9 birth cohorts were analyzed. The key study variables were seeking dental care on an annual basis (ADC) and edentulism. For the analysis of ADC, survey year, age, gender, socio-economic status (SES) group, denture-wearing, and school dental care (SDC) during childhood were considered. For the analysis of edentulism, only respondents aged 35+ years were included. Survey year, age, gender, SES group, ADC, and SDC during childhood were considered as the independent factors. To take into account the clustering effect of birth cohorts, marginal logistic regressions with an independent correlation structure in generalized estimating equations (GEE) were carried out, with PROC GENMOD in SAS software.Results: The overall proportion of people seeking ADC increased from 58.8% in 1975 to 86.7% in 2005, while for respondents aged 35 years or older, the overall prevalence of edentulism (35+ years) decreased from 36.4% in 1975 to 5.0% in 2005. Females, respondents in the higher SES group, in more recent survey years, with no denture, and receiving SDC in all grades during childhood were associated with higher probability of seeking ADC regularly (P < 0.05). The interaction of SDC and age (P < 0.0001) was significant. The probabilities of seeking ADC were even higher among subjects with SDC in all grades and aged 45 years or older. Females, older age group, respondents in earlier survey years, not seeking ADC, lower SES group, and not receiving SDC in all grades were associated with higher probability of being edentulous (P < 0.05).Conclusions: With the use of GEE, the potential clustering effect of birth cohorts in sequential cross-sectional oral health survey data could be appropriately considered. The success of Danish dental health policy was demonstrated by a continued increase of regular dental visiting habits and tooth retention in adults because school dental care was provided to Danes in their childhood. © 2011 Li et al; licensee BioMed Central Ltd.en_HK
dc.languageengen_US
dc.publisherBioMed Central Ltd.. The Journal's web site is located at http://www.biomedcentral.com/bmcoralhealth/en_HK
dc.relation.ispartofBMC Oral Healthen_HK
dc.rightsB M C Oral Health. Copyright © BioMed Central Ltd..-
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.titleAge, period, and cohort analysis of regular dental care behavior and edentulism: A marginal approachen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1472-6831&volume=11 article no. 9&spage=&epage=&date=2011&atitle=Age,+period,+and+cohort+analysis+of+regular+dental+care+behavior+and+edentulism:+a+marginal+approach-
dc.identifier.emailWong, MCM: mcmwong@hkucc.hku.hken_HK
dc.identifier.emailLam, KF: hrntlkf@hkucc.hku.hken_HK
dc.identifier.authorityWong, MCM=rp00024en_HK
dc.identifier.authorityLam, KF=rp00718en_HK
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1186/1472-6831-11-9en_HK
dc.identifier.pmid21410991-
dc.identifier.pmcidPMC3073963-
dc.identifier.scopuseid_2-s2.0-79952704105en_HK
dc.identifier.hkuros185105en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-79952704105&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume11en_HK
dc.identifier.issue1en_HK
dc.identifier.isiWOS:000208596800009-
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridLi, KY=37085271900en_HK
dc.identifier.scopusauthoridWong, MCM=26029250900en_HK
dc.identifier.scopusauthoridLam, KF=8948421200en_HK
dc.identifier.scopusauthoridSchwarz, E=7202730481en_HK
dc.identifier.citeulike9032070-

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