==== 1950 (aged 4 years) ====
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=== Responding Population ===

All eligible study members were contacted.

|Provided information        |4,700|
|Cumulative total of deaths  |229  |
|Cumulative permanent refusal|1    |
|Temporarily living abroad   |36   |
|Cumulative emigrated        |196  |
|Failure to contact          |200  |
^Total                       ^5,362^
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=== Data collection ===

Health visitors collected information from health records and interviewed mothers at home about the health and home and family circumstances of the mother and baby. Health visitors also made assessments of maternal care and home circumstances.

Maternal reports of hospital admissions were checked with hospital records.
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=== Training for data collection ===

Instructions are given at the head of each form.
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=== Contents ===

  * Accidents
  * Infectious Diseases
  * Discharge from ears
  * Colds
  * Circumcision
  * In patient treatment
  * Sleeping arrangements
  * Habits
  * Welfare Centres
  * Nurseries
  * About the Mother and help received
  * Husband's Occupation
  * The Household
  * Anthropometry
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=== Questionnaires ===

  * {{ questionnaires : 1950-Follow-up2-AN2.pdf|Form AN2 }} -  Face to face interview of mother by health visitor