• Japan: tooth decay among children by age 2018

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As of 2019, close to 45 percent of children aged six to 11 years old in elementary schools had dental caries, according to the medical examinations conducted at schools across Japan. In all age cohorts, the share of students with tooth decay has continuously declined since 2014.

Share of young students with dental caries in Japan from 2014 to 2019, by age group

	5 to years (kindergarten)	6 to 11 years (elementary school)	12 to 14 years (junior high school)	15 to 17 years (senior high school)
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Release date

March 2020

More information

Region

Japan

Survey time period

2014 to 2019; from April 1 to June 30 of each year

Special properties

ages of respondents are as of April 1 of each year

Supplementary notes

Based on medical examination results of children aged between 5 to 17 years old in kindergarten to high school.

Sample size:
2014 n=3,337,494
2015 n=3,351,047
2016 n=3,437,062
2017 n=3,405,501
2018 n=3,423,771
2019 n=3,371,982