Korean Journal of Family Practice

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Fig. 1. Flow of study selection. If the samples had null value in the survey of age and health habits, it was also excluded from the analysis. If clinical outcomes are missing values, they are considered poorly controlled, coding as zero. Finally, 262 patients were included in the analysis.
Korean J Fam Pract 2021;11:74~80 https://doi.org/10.21215/kjfp.2021.11.1.74
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