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Fig. 1 | BMC Health Services Research

Fig. 1

From: The effects of orthodontic treatment on personal dental expenditures in South Korea: a follow-up study using Korean health panel survey

Fig. 1

Study schematic showing follow-up periods for the OT and non-OT groups in each yearly cohort. A is the date range of completion of orthodontic treatment and the cohort inclusion period of the OT and non-OT groups. B represents the follow-up periods for calculating per-capita OOP expenditures for dental care of both groups in each yearly cohort

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BMC Health Services Research

ISSN: 1472-6963

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