[Analysis of sweet snack eating habits and lifestyle using a health check for toddlers].

Objectives　In Japan, medical questionnaires on diet and lifestyle are administered during health checkups for children. Since the rate of health checkup participation is high, the information obtained from these questionnaires can be used for regional diagnoses. In this study, we evaluated the relationship between sweet snack eating habits (SSEHs) and lifestyle habits in toddlers using data from the questionnaires.Methods　This study was conducted across 35 municipalities in Aichi Prefecture, Japan, where individual toddlers can be tracked at medical examinations at the age of 1 year 6 months (18 m) and 3 years (36 m). The subjects were 18,251 toddlers (9,393 boys [51.5%]) who participated in the health checkup in the same municipalities at 18 m in 2013 and 36 m in 2014-2015. Subjects were divided into four categories based on their SSEHs at 18 m and 36 m: N-N (no SSEH at either 18 m or 36 m); Y-N (no SSEH at 36 m only); N-Y (no SSEH at 18 m only); Y-Y (SSEH at both 18 m and 36 m). Other lifestyle habits were divided into two levels: good habits and bad habits. A multinomial logistic regression analysis was performed using the SSEH category as the dependent variable and lifestyle as the independent variable. The control groups were the Y-Y category and bad habit for the dependent and independent variables, respectively.Results　The proportions of N-N, Y-N, N-Y, and Y-Y subjects were 27.7%, 8.6%, 24.1%, and 39.6%, respectively. At 18 m, 48.2% toddlers had an SSEH, which increased to 63.7% at 36 m. Most toddlers (82.2%) had a habit of sweet snacking at 18 m and habitually consumed sweet snacks at 36 m. The absence of nursing at bedtime at 18 m was positively associated with the N-N group (odds ratio [99% confidence interval]=1.25 [1.11-1.41]) and the Y-N group (1.28 [1.07-1.52]); however, no association was found with the N-Y group (0.99 [0.88-1.11]). Parental finish polishing at 18 m tended to show a positive association only with the N-N group (1.10 [0.99-1.23]).Conclusion　Nearly half of toddlers had SSEHs by 18 m, and most of them continued to have the habit at 36 m. Oral hygiene behavior at 18 m was associated with SSEHs of toddlers up to 36 m. A regional diagnosis using the results of the health checkup for children is useful for identifying factors related to health problems.