The Malmö Diet and Cancer Study: representativity, cancer incidence and mortality in participants and non-participants
Författare
Summary, in English
In order to investigate potential selection bias in population-based cohort studies, participants (n = 28098) and non-participants (n = 40807) in the Malmo Diet and Cancer Study (MDCS) were compared with regard to cancer incidence and mortality. MDCS participants were also compared with participants in a mailed health survey with regard to subjective health, socio-demographic characteristics and lifestyle. Cancer incidence prior to recruitment was lower in non-participants, Cox proportional hazards analysis yielded a relative risk (RR) with a 95% confidence interval of 0.95 (0.90-1.00), compared with participants. During recruitment, cancer incidence was higher in non-participants, RR: 1.08 (1.01-1.17). Mortality was higher in non-participants both during, 3.55 (3.13-4.03), and following the recruitment period, 2.21 (2.03-2.41). The proportion reporting good health was higher in the MDCS than in the mailed health survey (where 74.6% participated), but the socio-demographic structure was similar. We conclude that mortality is higher in non-participants than in participants during recruitment and follow-up. It is also suggested that non-participants may have a lower cancer incidence prior to recruitment but a higher incidence during the recruitment period.
Avdelning/ar
Publiceringsår
2001
Språk
Engelska
Sidor
489-499
Publikation/Tidskrift/Serie
European Journal of Cancer Prevention
Volym
10
Issue
6
Dokumenttyp
Artikel i tidskrift
Förlag
Lippincott Williams & Wilkins
Ämne
- Cancer and Oncology
Nyckelord
- socio-demography
- representativity
- participants
- non-participants
- Cancer incidence
- mortality
Aktiv
Published
Forskningsgrupp
- Surgery
- Geriatric Medicine
- Nutrition Epidemiology
- Cardiovascular Research - Epidemiology
- Social Medicine and Health Policy
- Internal Medicine - Epidemiology
ISBN/ISSN/Övrigt
- ISSN: 1473-5709