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Re: Is the Risk Difference Really a More Heterogeneous Measure?

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journal contribution
posted on 2018-05-04, 12:16 authored by Amand F. Schmidt, Frank Dudbridge, Rolf H. H. Groenwold
With great interest did we read the much-needed commentary by Poole et al.1 on the empirical evidence behind claims that the risk difference (RD) is more heterogeneous (i.e., the difference in effects between studies or groups of patients) than the odds ratio (OR). In their contribution, the authors show that the previously reported higher rejection rates of RD homogeneity may be explained by differences in power between measurement scales, an issue we previously addressed as well.2 Without detracting from their contribution or conclusions, with which we agree, we were surprised that the authors omitted the theoretical grounds why the OR is thought to be a less heterogeneous measure.

History

Citation

Epidemiology, 2016, 27 (3), p e12

Author affiliation

/Organisation/COLLEGE OF LIFE SCIENCES/School of Medicine/Department of Health Sciences

Version

  • AM (Accepted Manuscript)

Published in

Epidemiology

Publisher

Lippincott, Williams & Wilkins for International Society for Environmental Epidemiology

issn

1044-3983

eissn

1531-5487

Copyright date

2016

Available date

2018-05-04

Publisher version

https://journals.lww.com/epidem/Fulltext/2016/05000/Re___Is_the_Risk_Difference_Really_a_More.24.aspx

Language

en

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