Author:
Li Kar-Yan,Wong May Chun Mei,Lam Kwok-Fai,Schwarz Eli
Abstract
Abstract
Background
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.
Publisher
Springer Science and Business Media LLC
Reference75 articles.
1. World Health Organization: Oral Health Survey - Basic methods. 1997, Geneva: World Health Organization, 4
2. Holst D, Schuller A, Grytten J: Future treatment needs in children, adults and the elderly. Community Dent Oral Epidemiol. 1997, 25: 113-118. 10.1111/j.1600-0528.1997.tb00907.x.
3. Fienberg SE, Mason WM, (eds): Specification and implementation of age, period and cohort models. 1985, New York: Springer-Verlag
4. Schwarz E: Changes in demand for dental care among Danish adults, 1975-90. Acta Odontol Scand. 1996, 54 (1): 36-44. 10.3109/00016359609003507.
5. Hagglin C, Berggren U, Hakeberg M, Hallstrom T, Bengtsson C: Variations in dental anxiety among middle-aged and elderly women in Sweden: a longitudinal study between 1968 and 1996. J Dent Res. 1999, 78 (10): 1655-1661. 10.1177/00220345990780101101.
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