1. 2008-09-01IDAMES Cambridge UK The Malmö Diet and Cancer cohort Elisabet Wirfält Nutrition epidemiology Department of Clinical Sciences in Malmö Lund University, Sweden

2. 2008-09-01IDAMES Cambridge UK Recruitment & participation rates Data collection & diet history methodology Representability

3. 2008-09-01IDAMES Cambridge UK Malmö inhabitants Year of birth 1991-1994: 1926-1945 1995-1996: 1923-1945 men 1923-1950 women Source population N = 74 138

4. 2008-09-01IDAMES Cambridge UK Recruitment Passive: Posters, pamphlets, news- paper articles, health centers Active: Mailed invitations to randomly selected individuals, max 3 letters Telephone calls to non-responders

5. 2008-09-01IDAMES Cambridge UK 5 50568 616 Technical3 034 No answer21 817 Refused16 942 Died224 Excluded1 975 Incomplete2 048 5 08223 016 VolunteersInvitedNon participants

6. 2008-09-01IDAMES Cambridge UK Final cohort N= 28 098 Over all participation rate40.8 % Men 38.3 % Women 42.6 % Compare with MHS9474.6 %

7. 2008-09-01IDAMES Cambridge UK Diet history methodology –168-item diet history questionnaire –7 day menu book –1 hour (45 min) interview

8. 2008-09-01IDAMES Cambridge UK 1st visit –Group session to explain procedures –Direct measurements: anthropometrics, blood samples etc At home –Completion of questionnaires –Recording of meals in menu book 2nd visit (10 days later) –Diet history interview –Checking of questionnaires

9. 2008-09-01IDAMES Cambridge UK Representativity compared with MHS94 Born in Sweden Employed (self, non-manual) Wellbeing, social support and participation Ex-, never-smokers Overweight

10. 2008-09-01IDAMES Cambridge UK Representativity participants vs non-participants Cancer –Higher prevalence at baseline –Lower incidence during recruitment –Similar incidence during follow up Mortality –Three times higher in non-participants

11. 2008-09-01IDAMES Cambridge UK Thank you for your attention!