Caries-free 12-year-olds, percentage (%)

Number of caries-free 12-year-olds divided by the total number of 12-year-olds examined, multiplied by 100. The data is collected through a survey sent to all regions. Comparisons between regions should be made with caution as differences in patient data may affect the results. Data is available according to gender breakdown.

无龋（caries-free）12岁儿童人数除以受检12岁儿童总人数，再乘以100。该数据集通过向所有地区发放的调研问卷采集获得。鉴于患者数据差异可能对结果产生影响，进行地区间比较时需谨慎行事。数据集可按性别分类获取。