IDAMES Cambridge UK The Malmö Diet and Cancer cohort Elisabet Wirfält Nutrition epidemiology Department of Clinical Sciences in Malmö Lund University, Sweden

IDAMES Cambridge UK Recruitment & participation rates Data collection & diet history methodology Representability

IDAMES Cambridge UK Malmö inhabitants Year of birth : : men women Source population N =

IDAMES 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

IDAMES Cambridge UK Technical3 034 No answer Refused Died224 Excluded1 975 Incomplete VolunteersInvitedNon participants

IDAMES Cambridge UK Final cohort N= Over all participation rate40.8 % Men 38.3 % Women 42.6 % Compare with MHS %

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

IDAMES 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

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

IDAMES 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

IDAMES Cambridge UK Thank you for your attention!