Selection bias in observational studies: out of control?

Neurology. 2009 Jan 13;72(2):108-9. doi: 10.1212/01.wnl.0000339046.10288.fb.
No abstract available

Publication types

  • Comment
  • Editorial

MeSH terms

  • Cohort Studies*
  • Comorbidity
  • Data Interpretation, Statistical
  • Humans
  • Multiple Sclerosis / diagnosis*
  • Multiple Sclerosis / epidemiology*
  • Random Allocation
  • Registries / standards
  • Selection Bias*
  • Surveys and Questionnaires / standards