Fig. 1

Consistency of self-perceived weight status and actual weight status (BMI) according to sex among children and adolescents aged 6 to 17 years in the CHNS, 2015 (N = 1,369). The chi-square tests were used to examine agreement between self-perceived weight status and actual weight status. If the participants self-perceived weight status corresponded with their weight status, they were classified into the consistent assessment group. If the participants self-perceived weight status was below their weight status, they were classified into the underestimated group. Otherwise, they were classified into the overestimated group