The sampling frame includes 845,345 offspring consisting of all singleton live births in Finland (approximately 56,500 births per year) between Jan 1st 1996 and Dec 31st 2010, identified from the Medical Birth Register.
Approximately 250 000 birth records were examined.
NSW has approximately 95,000 births per annum (one-third of all Australian births), of which fewer than 0.5% are home births.
The KHDSS recorded 19,998 births within the period 2005 2009, that is, approximately 4,000 births per year.
Fertility for women aged 25 29 dropped from 219 births per 1,000 person-years in 2005 to approximately 205 births per 1,000 person-years in 2008.
Between 2002 and 2011 there were approximately 6,500 births each year at Monash Health and half of the women giving birth there were born overseas.
The MU has approximately 600 births annually, and the other two units have approximately 1200 births each.
This region has approximately 17,000 births per year [ 9], which is approximately 10%% of all births in the Netherlands [ 10].
This region comprises a population of about three million, with approximately 35 000 births each year during the study period, of which approximately 780 births each year (2.2%) included a congenital anomaly and were therefore recorded in NorCAS [ 18, 19].
The Dadaab refugee camp is the world's largest, with a population of about 357,000, and approximately 1,000 births a month.
