Outline of the first Longitudinal Survey of Babies in 21st Century
We have started this survey in 2001. This survey is carried out twice a year because the birthdays of the surveyed subjects are in January and July. We conducted second survey in 2002 and would continue every year.
This is the first longitudinal survey conducted by the central government in Japan and it covers more than 47000 subjects.
Vital and Health Statistics Division
Statistics and Information Department, Minister's Secretariat