Trends in live births and birthweight by social class, marital status and mother's age, 1976-2000.

: This article describes trends in live births between 1976 and 2000 and by birthweight from 1983 to 2000 in England and Wales. It investigates variation by mother's age, social class of father and marital status and describes trends in the percentage of births which were multiple. Changes in patterns of childbearing and cohabitation throughout the period are described.