Motor development of triplets: a Japanese prospective cohort study.

We analyzed whether motor development in early life is different between singletons and triplets in Japan. The motor development was reported by mothers by postal questionnaire for 1,121 triplet children and in regular health check-ups for 13,906 singleton children. Children who were suspected of having neurological abnormality or disability were excluded from the analysis.

[Factors associated with the recognition of child maltreatment by mothers rearing children from infancy to primary school age].

Objective: This research was conducted to determine the prevalence of recognition of child maltreatment among mothers with children aged 12 or under, and to identify associated factors in order to prevent child maltreatment.

Methods: The subjects of this study were 3,000 women extracted by systematic random sampling of mothers of 6,790 children who had had four-month health check-ups in Nishinomiya city. The response rate was 57.