Abstract
The purpose of this study is to demonstrate a reference data set including percentile curves of anthropometric measurements for age and sex groups in Japanese adults living in institutions for persons with intellectual disability, which would be utilized for the nutritional assessment of those persons. We requested all the institutions officially registered as institutions for persons with intellectual disability in Japan (n=1,950) to provide the anonymous data of individual subjects aged 30's to 50's from their medical records regarding age, sex, background, diseases, daily living activities, height, and body weight of the latest, before one year and five years. We collected data of 5,371 subjects from 188 institutions and analyzed on the eligible data of 4,903 subjects without missing values (2,643 males and 2,260 females). The proportion of the subjects with daily living activities being ‚independent“ or ‚almost independent“ was about 88%. The prevalence of overweight (BMI≥25kg/m2) and underweight (BMI<18.5kg/m2) was 16% and 13% in males, 27% and 12% in females, respectively. BMI distributions in the subgroups of epilepsy and mental retardation/developmental disorders were not largely different from the whole groups. Retrospective data before 5 years indicated that body weight was likely to decline at a level of around 3%/5 years in both sexes during the middle-aged periods, which was contrasted with the natural courses of body weight changes in healthy Japanese populations. This finding will give the rationale for the importance of nutritional support specified for the persons with intellectual disability.
