Responding Population

All eligible study members were contacted.

Provided information 3,026
Cumulative total of deaths 281
Cumulative permanent refusals100
Temporarily living abroad 66
Cumulative emigrated 397
Failure to contact 1,492

Data collection

A postal questionnaire was sent to all cohort members

Training for data collection

Instructions are given at the head of each form.


Study Member

  • Marital status and children
  • Accidents and medical appointments
  • Housing
  • Employment history and earnings



  • questionnaires/1969.txt
  • Last modified: 18 months ago
  • by nmpo