Published in:
01-08-2009 | Letter--Reply
Reply to: “Requirements for applying a case–control study model and clinical significance of changes in the visual analogue scale score in abdominal pain”
Authors:
Graziano Ceccarelli, Luciano Casciola, Massimo Codacci-Pisanelli, Alberto Bartoli, Lelio Di Zitti, Alessandro Spaziani, Alessia Biancafarina, Massimo Stefanoni, Alberto Patriti
Published in:
Surgical Endoscopy
|
Issue 8/2009
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Excerpt
We greatly appreciated the detailed epidemiologic explanation of a case–control study but we do not believe that our study design biases the results presented. …