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Abstract : Poor health status, unhealthy behavior, nutritional status, and lifestyle can cause disproportionate growth, and body proportions can be seen from the sitting height ratio. This study aimed to evaluate the changes of sitting height ratio of Yogyakarta boys and girls aged 7-15 years. A cross sectional data was performed on 492 Javanese children consisting of 237 boys and 255 girls, aged 6-12 years. The body height and sitting height of each subject was measured in order to calculate the ratio between sitting height and height. Anthropometric measurements were measured to all subjects based on the International Standard for Anthropometric Assessment procedures. Data were analyzed using ANOVA, Chi-Square tests, and simple linear regression analysis with a significance of p<0.05. There were significant differences between the average sitting height and sitting height ratio between boys and girls. Average height and sitting height of boys was 140.18 cm and 71.93 cm, while girls were 142.58 cm and 74.25 cm, respectively. There was a positive correlation (p<0.05) between sitting height, height, and sitting height ratio with age in both sexes. Among children the older the age, the greater the sitting height ratio. Sitting height ratio can be used to assist in the diagnosis and follow-up of children with growth problems.