Does the LS contain information on birthweight?
The LS contains information on live births, infant deaths and still births to sample mothers, and new births. Information on birthweight is available from 1976, although the proportion of births with birthweight recorded is low in the first few years. For more information, you should look at the data dictionary and Longitudinal Study 1971-1991: History, organisation and quality of data (LS Series No.7).