Follow-Up Studies

  • Jørn Olsen
  • Kaare Christensen
  • Jeff Murray
  • Anders Ekbom
Part of the Springer Series on Epidemiology and Public Health book series (SSEH, volume 1)


If you want to study determinants (exposures) of the transition from healthy to diseased or death, or from diseased to non-diseased, you have to record the sequence of causes, treatments, and end points in time; you need to have longitudinal recordings in most situations. If the exposure is obesity and the outcome is type 2 diabetes, you need at least one recording of obesity in time. Obesity is defined as a body mass index (BMI) of over 30 (a man with a weight of 95 kg and a height of 1.75 m will have a BMI of 95/1.752 = 31.0 and thus be obese).


Body Mass Index Cumulative Incidence Body Mass Index Group Overweight Group Body Mass Index Level 
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Copyright information

© Springer Science+Business Media, LLC 2010

Authors and Affiliations

  • Jørn Olsen
    • 1
  • Kaare Christensen
    • 2
  • Jeff Murray
    • 3
  • Anders Ekbom
    • 4
  1. 1.School of Public HealthUniversity of California, Los AngelesLos AngelesUSA
  2. 2.Institute of Public HealthUniversity of Southern DenmarkOdense CDenmark
  3. 3.Department of Pediatrics, 2182 MedLabsUniversity of IowaIowa CityUSA
  4. 4.Department of MedicineKarolinska InstitutetStockholmSweden

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