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Association between dental visiting and missing teeth: Estimation using propensity score adjustment.
Meghashyam Bhat1,2, Loc G Do1, Kaye Roberts-Thomson1
1School of Dentistry, the University of Adelaide, Adelaide, South Australia, Australia.
Journal of Investigative and Clinical Dentistry
|February 10, 2018
Summary
Regular dental visits are strongly linked to fewer missing teeth in adults. This study used propensity score adjustment to confirm this association in a rural Indian population.
Area of Science:
- Dental Public Health
- Epidemiology
- Biostatistics
Background:
- Tooth loss is a significant public health concern, particularly in rural populations.
- Understanding factors associated with missing teeth is crucial for targeted interventions.
- Previous studies may be limited by confounding factors.
Purpose of the Study:
- To determine the association between dental visiting and missing teeth.
- To control for confounding bias using propensity score (PS) adjustment.
- To compare PS-adjusted estimates with traditional regression models.
Main Methods:
- Population-based study of 873 adults aged 35-54 years in India.
- Used multistage stratified cluster random sampling.
- Employed Inverse Probability Weighting (IPW) based on PS for dental visiting to balance covariates.
Main Results:
- 65.3% of participants had one or more missing teeth.
- Dental visiting was associated with a higher prevalence ratio of missing teeth (2.40 with IPW).
- Propensity score adjustment reduced covariate bias, strengthening the findings.
Conclusions:
- Dental visiting demonstrates a strong association with missing teeth in this rural Indian population.
- The findings highlight the importance of regular dental care for tooth retention.
- Propensity score methods provide more reliable estimates than traditional regression.
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