Statistical Consultation Line: (865) 742-7731
  Statistician For Hire
  • Store

Statistical power and categorical outcomes

Categorical outcomes decrease statistical power and increase the needed sample size

Categorical and nominal variables decrease statistical power and increase the needed sample size to detect significant effects. This is due to categorical measurement possessing decreased precision and accuracy.

Less powerful non-parametric statistics are used with categorical outcomes. Less precision and accuracy of treatment effects is yielded from non-parametric statistics as well.

​Categorical outcomes are very prevalent in medicine, so researchers should plan to either measure for large effect sizes or collect larger sample sizes to achieve adequate statistical power.

Categorical outcomes decrease statistical power and increase the needed sample size.
Categorical outcomes decrease statistical power and increase the needed sample size.

Click on the Power and Research Design button to continue.
Power and Research Design
Back to Power and Outcomes
Research Engineer Home Page

Hire A Statistician - Statistical Consulting for Students

$75.00
Buy Now

DO YOU NEED TO HIRE A STATISTICIAN?

Eric Heidel, Ph.D. will provide the following statistical consulting services for undergraduate and graduate students at $75/hour. Secure checkout is available with Stripe, Venmo, Zelle, or PayPal.


  • Statistical Analysis 
  • Research Design
  • Sample Size Calculations
  • Diagnostic Testing and Epidemiological Calculations
  • Survey Design and Psychometrics

Contact Dr. Eric Heidel
consultation@scalelive.com
(865) 742-7731

Copyright © 2021 Scalë. All Rights Reserved. Patent Pending.