In elucidating risk factors, or attempting to make predictions about the behavior of subjects in our biomedical studies, we often build statistical models. These models are meant to capture some aspect of reality, or some real-world process underlying the phenomena we are examining. However, no model is perfect, and it is thus important to have tools to assess how accurate models are. In this commentary, we delve into the various roles that our models can play. Then we introduce the notion of the goodness of fit of models and lay the ground work for further study of diagnostic tests for assessing both the fidelity of our models and the statistical assumptions underlying them.
To read this article in full you will need to make a payment
Purchase one-time access:Academic & Personal: 24 hour online accessCorporate R&D Professionals: 24 hour online access
One-time access price info
- For academic or personal research use, select 'Academic and Personal'
- For corporate R&D use, select 'Corporate R&D Professionals'
Subscribe:Subscribe to The Journal of Foot and Ankle Surgery
Already a print subscriber? Claim online access
Already an online subscriber? Sign in
Register: Create an account
Institutional Access: Sign in to ScienceDirect
- Investigators' corner: assumptions of statistical tests: what lies beneath.J Foot Ankle Surg. 2017; 56: 910-913
- Investigators' corner: logistic models—an odd(s) kind of regression.J Foot Ankle Surg. 2013; 52: 279-280
- Last man standing—survival analysis.J Foot Ankle Surg. 2012; 51: 825-826
- Investigators' corner: assessing diagnostic tests I: you can't be too sensitive.J Foot Ankle Surg. 2015; 54: 519-520
- Investigators' corner: assessing diagnostic tests II: grading on a curve.J Foot Ankle Surg. 2015; 54: 765-766
- Investigators' corner: random effects: variance is the spice of life.J Foot Ankle Surg. 2016; 55: 1343-1346
- Investigators' corner: mind your p values.J Foot Ankle Surg. 2013; 52: 138-139
Financial Disclosure: None reported.
Conflict of Interest: None reported.
© 2017 by the American College of Foot and Ankle Surgeons. All rights reserved.