Sentence examples for for first birth from inspiring English sources

It was found that the development of a bi-modal distribution was widespread for first birth fertility curves, and this might be part of the normal evolution from an early to a later fertility schedule.

Photos: This year, two babies tied for first birth of the year in New York City: Noah Santos, above, with his mother, Ingrid, at Our Lady of Mercy Medical Center in the Bronx; and Daamiah Hunter, with her mother, Amanda, who was greeted by Mayor Michael R. Bloomberg at Elmhurst Hospital Center in Queens.

With that definition, according to Mirowsky, one California study concluded that the "best age" for first birth, in terms of lowest rates of birth defects, is 26.

For example, previous research has found a negative educational gradient for first birth rates in cohabitation in Austria and the Netherlands, suggesting that cohabitation is associated with disadvantage (Perelli-Harris et al. 2010).

Finally, this study was intentionally restricted to first births, but it will be important to determine whether the findings for first birth characteristics hold for all births or whether they are unique to the first birth (e.g., whether total duration of breast-feeding has the same association with breast density as duration of breast-feeding after the first birth).

Finally, the analyses of birth characteristics were intentionally restricted to first births, but it will be important to determine whether the findings for first birth characteristics hold for all births or whether they are unique to the first birth (e.g., whether total duration of breast-feeding has the same association with hormone levels as duration of breast-feeding after the first birth).

In China, the sex ratio for first births matches that average (see table); but for every subsequent birth, the surplus of boys increases.

Current guidelines by the American Congress of Obstetricians and Gynecologists, or ACOG, define an abnormally long second stage as more than three hours for women who received an epidural and are giving birth for the first time, and more than two hours for first births without an epidural.

Using data from the Harmonized Histories, we assess to what extent partnership behaviour – e.g. postponed union formation, increasing unmarried cohabitation and separation – can explain trends in synthetic parity progression ratios for first births in three European countries between the 1970s and 2000s.

This gap has narrowed somewhat in the US over time; CDC natality statistics from 2006 show an average parental age gap of 2.7 y for first births [20].

These figures were 23% and 28%, respectively, for first births occurring from 2003 to 2005.