Abstract
Comment on "Modeling the Growth of Infrarenal Abdominal Aortic Aneurysms" by Bailey et al.
Highlights
Where T ϭ the time between the first and last tests and  is a coefficient to be estimated
The authors have argued that the exponential model is no better than the ordinary least squares (OLS) estimates they provided and which they considered to be inferior to their preferred models; namely, the linear multilevel model (MLM) and quadratic MLM models
The authors noted that they estimated the exponential model, finding that for a person with a 1 cm aneurysm, the annual growth would be 0.052 cm, increasing to 0.088 cm after 10 years
Summary
Where T ϭ the time between the first and last tests and  is a coefficient to be estimated. The authors have argued that the exponential model is no better than the OLS estimates they provided and which they considered to be inferior to their preferred models; namely, the linear multilevel model (MLM) and quadratic MLM models. The authors noted that they estimated the exponential model, finding that for a person with a 1 cm aneurysm, the annual growth would be 0.052 cm, increasing to 0.088 cm after 10 years.
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