All eligible study members were contacted.

School nurses and health visitors interviewed mothers at home and school doctors undertook a medical examination of the child. 

Maternal reports of hospital admissions were checked with hospital records

Instructions are given at the head of each form.

• Accidents
• Infectious diseases
• Hospital admissions
• Other conditions
• Bladder and Bowel training
• Habits
• Sleep and play
• The dwelling
• The household
• The mother’s work
• Subsequent pregnancies
• Separation from mother
• Education of father and mother
• Occupation of present husband
• School nurses comments

• Medical History
• Examination

More detailed information on the doctor-collected topics collected is available here

• Form AN3  - Face to face interview of mother by health visitor
• Form D1   - Examination by school doctor