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REPLY

C-Reactive Protein and Risk for Colorectal Cancer

right arrow Shumin M. Zhang, MD, ScD, and Paul M Ridker, MD, MPH

4 October 2005 | Volume 143 Issue 7 | Page 544


IN RESPONSE:

Drs. Mascitelli and Pezzetta suggest that abnormal glucose metabolism might be responsible for the null association that we observed between C-reactive protein levels and risk for colorectal cancer. We conducted an analysis excluding 681 women who reported a history of diabetes mellitus at baseline from our study sample, and the associations between C-reactive protein and risk for colorectal cancer did not appreciably change. The multivariable hazard ratios and their corresponding 95% CIs according to cutoff points for C-reactive protein were 0.74 (95% CI, 0.49 to 1.11) for the category of 1 to 3 mg/L and 0.66 (CI, 0.42 to 1.03) for the category of greater than 3 mg/L (P = 0.12 for trend), compared with the category of less than 1 mg/L. These data suggest that our findings are unlikely to be explained by confounding by diabetes mellitus.


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From Brigham and Women's Hospital, Boston, MA 02215.

Potential Financial Conflicts of Interest: None disclosed.

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Related articles in Annals:

Articles
C-Reactive Protein Levels Are Not Associated with Increased Risk for Colorectal Cancer in Women
Shumin M. Zhang, Julie E. Buring, I-Min Lee, Nancy R. Cook, AND Paul M. Ridker
Annals 2005 142: 425-432. [ABSTRACT][SUMMARY][Full Text]  

Letters
C-Reactive Protein and Risk for Colorectal Cancer
Luca Mascitelli AND Francesca Pezzetta
Annals 2005 143: 544. [Full Text]  




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