For the investigation of women from the 20, i.e. i tested first births you to definitely took place in this two years off relationships. The fresh new electronic duplicates of the birth info for those years consist of the fresh mom’s times and you can 12 months regarding birth, the brand new day and you will 12 months of your mother’s latest relationship, brand new month and you may seasons of baby’s birth, and also the little one’s birth acquisition. Therefore, information regarding the newest beginning acquisition is actually available for just 58.2% out-of births. 자세히 보기