What should I do if my study population is too small? 

If you are worried that your sample will be too small, consider:

  • Broadening the variable categories you have applied to your study population (such as a wider age range)
  • Determining whether you can remove an exclusion criterion or comorbidity to analyze separately while still maintaining the integrity of the research question, scope of the project, and the scientific value
  • Expanding the study population to nearby hospitals through a proxy IRB process
  • Utilizing data from national databases

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