A childhood immunization education program for parents delivered during late pregnancy and one-month postpartum: a randomized controlled trial.

Background: Improved immunization rates have reduced the incidence of vaccine-preventable diseases (VPDs) in advanced nations. Japan's unique vaccination system classifies vaccines into routine vaccines ostensibly required under the Preventive Vaccination Law and recommended but optional vaccines, although all vaccines are in fact voluntary. In Japan, low immunization rates, particularly for optional vaccines, have resulted in high rates of sequelae and death.

Premenstrual Distress Among Japanese High School Students: Self-Care Strategies and Associated Physical and Psychosocial Factors.

This study aimed to identify self-care strategies and assess physical and psychosocial factors associated with premenstrual distress among high school students. A cross-sectional survey of 217 adolescent girls aged 15 to 18 years was conducted in October 2009. Most (84.