Fig 1.
The flowchart of study sample selection from the National Health Insurance Research Database in Taiwan.
Fig 2.
Kaplan–Meier curves for cumulative risk of periodontal disease in patients aged ≥ 20 years stratified by study group and compared using the log-rank test.
Table 1.
Characteristics of the study groups at baseline.
Table 2.
Characteristics of the study groups at the end of follow-up.
Table 3.
Cox proportional hazards regression analysis of risk factors of periodontal disease.
Table 4.
Cox proportional hazards regression analysis of risk factors of periodontal disease at the end of follow-up.