Template:King1921 table7
From Embryology
Data for human births, collected by the U. S. Children’s Bureau (table 3), arranged according to the age of the mother at the time of parturition.
PER CENT
”°3§§§'fn‘a°” ’°§$”n§'§§§§”“ WING BIRTHS BTMBIRTES 33'??? ‘$3313? OF BIRTHS
Under 20 282 263 19 6 .95 20 to 39 4,882 4,683 199 4.07 40 and over 288 268 20 6.94 5,452 5,214 238 4 .36
