1971 (aged 25 years)


Responding Population

All eligible study members were contacted.

Provided information 3,307
Cumulative total of deaths 286
Cumulative permanent refusals124
Temporarily living abroad 70
Cumulative emigrated 436
Failure to contact 1,139


Data collection

A postal questionnaire was sent to all cohort members to ask about marriage, fertility, health, smoking, employment, training and further education and earnings. Health visitors attempted contacts and data collections with non-respondents.

Training for data collection

Instructions are given at the head of each form.

Contents

  • Marital status and children
  • Accidents and medical appointments
  • Chest and cough trouble (MRC questionnaire on respiratory symptoms)
  • Employment history and earnings
  • Use of government schemes to find employment
  • Further education
  • Smoking


Questionnaires