questionnaires:nshd_sample

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Sample for the National Survey of Health and Development 

From the initial Maternity Survey of 13,687, a sample of 5,362 singleton, living, babies born to married parents was selected for follow-up. 

This sample was stratified to include all single births to married women with husbands in non-manual and agricultural employment and 1 in 4 of all comparable births to women with husbands in manual employment.

  %Number
Version A Maternity study tbc
Version B Costs study  tbc
Total  5,362

 We are still in contact with over 80% of the original surviving sample living in mainland Britain.




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