We used these questionnaires at baseline and every 6 months thereafter:
(In order to view any of these files you will need Adobe Acrobat Reader )

  Baseline questionnaire (50 k, pdf)
  6-month questionnaire (42 k, pdf)
12-month questionnaire (41 k, pdf)
18-month questionnaire (42 k, pdf)
24-month questionnaire (54 k, pdf)
30-month questionnaire (27 k, pdf)
36-month questionnaire (42 k, pdf)
42-month questionnaire (28 k, pdf)
48-month questionnaire (44 k, pdf)
54-month questionnaire (53 k, pdf)
60-month questionnaire (40 k, pdf)
66-month questionnaire (30 k, pdf)
72-month questionnaire (60 k, pdf)

Data entry for each questionaire was done twice for 100% verification.

We asked dentists who served participants in the FDCS from 1993-1998 to complete this questionnaire:
FDCS Dentist questionnaire (288 k, pdf)