Prevalence of premastication among children aged 6–36 months and its association with health: A cross-sectional study in eight cities of China

Abstract

Premastication is thought to be an adaptive behavior in the introduction of complementary plant-bassed food to infants. It arouses controversy, however, because of the potential for transmitting saliva-born infectious diseases. The aim of this study was to explore whether premastication by healthy caregivers was associated with children's health and behavior. The data were collected as part of the Maternal and Infant Nutrition and Growth study. From 8 cities in China, 1341 pairs of infants/toddlers and their caregivers were recruited. An interviewer-administrated questionnaire collected data on sociodemographic characteristics, feeding behaviors, and self-reported health status. Anthropometric measurements were taken and blood samples were collected for analysis of hemoglobin levels. The overall prevalence of premastication was 26.9% and varies from 14–43% among the 8 cities. Premastication was not associated with occurrences of illness or with the nutritional indicators of height-for-age Z score, weight-for-age Z score, weight-for-height Z score, head circumference Z score and hemoglobin (P all >.05). Premastication occurred more often among infants who were raised by their parents (P =.005), whose mothers' education was lower (P