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Invitation to a population-based cohort study: differences between subjects recruited using various strategies.

Manjer, Jonas LU ; Elmståhl, Sölve LU ; Janzon, Lars LU and Berglund, Göran LU (2002) In Scandinavian Journal of Public Health1999-01-01+01:00 30(2). p.103-112
Abstract
AIM: The present study compares subjects recruited to a population-based prospective cohort study by community versus personal invitation, and subjects responding late versus early to personal invitation. Subjects were compared with respect to sociodemographic characteristics, selected lifestyle factors, cancer incidence and mortality. METHODS: The Malmö Diet and Cancer Study recruited a total of 28,098 subjects between 1991 and 1996. Entire birth-year cohorts, born 1923-50, were recruited using community directed (passive) invitation, and a personal letter of invitation (active recruitment). Information on sociodemography and lifestyle was obtained using a self-administered questionnaire. Anthropometric measurements were assessed at a... (More)
AIM: The present study compares subjects recruited to a population-based prospective cohort study by community versus personal invitation, and subjects responding late versus early to personal invitation. Subjects were compared with respect to sociodemographic characteristics, selected lifestyle factors, cancer incidence and mortality. METHODS: The Malmö Diet and Cancer Study recruited a total of 28,098 subjects between 1991 and 1996. Entire birth-year cohorts, born 1923-50, were recruited using community directed (passive) invitation, and a personal letter of invitation (active recruitment). Information on sociodemography and lifestyle was obtained using a self-administered questionnaire. Anthropometric measurements were assessed at a physical examination. Cancer incidence and cause of death were retrieved using record linkage with national registries. RESULTS: Subjects responding to community directed invitation were older, and more often females, than participants recruited using personal invitation. Furthermore, participants recruited through passive invitation had a comparably more favourable situation with regard to sociodemographic and lifestyle factors. They also had a lower frequency of prevalent disease, lower incidence of cancer and lower mortality. Contrary to this, men were more likely to respond late to a personal letter of invitation and late responders were also older, as compared with subjects responding early to personal invitation. Furthermore, those who responded late had a comparatively unfavourable socioeconomic situation and were characterized by a high prevalence of current smoking, obesity, weight change, and prevalent disease. CONCLUSIONS: Subjects who are recruited using different strategies in population-based cohort studies may have different sociodemographic and lifestyle characteristics, and may vary with regard to prevalent disease, cancer incidence and subsequent mortality. (Less)
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organization
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type
Contribution to journal
publication status
published
subject
keywords
Middle Age, Male, Life Style, Incidence, Human, Female, Comparative Study, Cohort Studies, Aged, Adult, Patient Selection, Population Surveillance : methods, Prospective Studies, Questionnaires, Support, Non-U.S. Gov't, Sweden : epidemiology, Neoplasms : mortality, Neoplasms : epidemiology
in
Scandinavian Journal of Public Health1999-01-01+01:00
volume
30
issue
2
pages
103 - 112
publisher
Taylor & Francis
external identifiers
  • wos:000175720700004
  • pmid:12028859
  • scopus:0036358806
ISSN
1651-1905
DOI
10.1080/14034940210133771
language
English
LU publication?
yes
id
99995997-80e5-4d52-860d-97cdc5bd5b9f (old id 108519)
alternative location
http://www.ncbi.nlm.nih.gov:80/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=12028859&dopt=Abstract
date added to LUP
2007-07-26 10:59:41
date last changed
2017-11-12 03:58:45
@article{99995997-80e5-4d52-860d-97cdc5bd5b9f,
  abstract     = {AIM: The present study compares subjects recruited to a population-based prospective cohort study by community versus personal invitation, and subjects responding late versus early to personal invitation. Subjects were compared with respect to sociodemographic characteristics, selected lifestyle factors, cancer incidence and mortality. METHODS: The Malmö Diet and Cancer Study recruited a total of 28,098 subjects between 1991 and 1996. Entire birth-year cohorts, born 1923-50, were recruited using community directed (passive) invitation, and a personal letter of invitation (active recruitment). Information on sociodemography and lifestyle was obtained using a self-administered questionnaire. Anthropometric measurements were assessed at a physical examination. Cancer incidence and cause of death were retrieved using record linkage with national registries. RESULTS: Subjects responding to community directed invitation were older, and more often females, than participants recruited using personal invitation. Furthermore, participants recruited through passive invitation had a comparably more favourable situation with regard to sociodemographic and lifestyle factors. They also had a lower frequency of prevalent disease, lower incidence of cancer and lower mortality. Contrary to this, men were more likely to respond late to a personal letter of invitation and late responders were also older, as compared with subjects responding early to personal invitation. Furthermore, those who responded late had a comparatively unfavourable socioeconomic situation and were characterized by a high prevalence of current smoking, obesity, weight change, and prevalent disease. CONCLUSIONS: Subjects who are recruited using different strategies in population-based cohort studies may have different sociodemographic and lifestyle characteristics, and may vary with regard to prevalent disease, cancer incidence and subsequent mortality.},
  author       = {Manjer, Jonas and Elmståhl, Sölve and Janzon, Lars and Berglund, Göran},
  issn         = {1651-1905},
  keyword      = {Middle Age,Male,Life Style,Incidence,Human,Female,Comparative Study,Cohort Studies,Aged,Adult,Patient Selection,Population Surveillance : methods,Prospective Studies,Questionnaires,Support,Non-U.S. Gov't,Sweden : epidemiology,Neoplasms : mortality,Neoplasms : epidemiology},
  language     = {eng},
  number       = {2},
  pages        = {103--112},
  publisher    = {Taylor & Francis},
  series       = {Scandinavian Journal of Public Health1999-01-01+01:00},
  title        = {Invitation to a population-based cohort study: differences between subjects recruited using various strategies.},
  url          = {http://dx.doi.org/10.1080/14034940210133771},
  volume       = {30},
  year         = {2002},
}