1. Risk of Lymphoma Associated With Combination Anti–Tumor Necrosis Factor and Immunomodulator Therapy for the Treatment of Crohn's Disease: A Meta-Analysis 
Corey A. Siegel, Sadie M. Marden, Sarah M. Persing, Robin J. Larson, Bruce E. Sands 
Clinical Gastroenterology and Hepatology 
Volume 7, Issue 8, Pages (August 2009)
DOI: /j.cgh
Copyright © 2009 AGA Institute Terms and Conditions

2. Figure 1
Flow diagram of the studies identified in search, and reasons for study exclusion.
Clinical Gastroenterology and Hepatology 2009 7, DOI: ( /j.cgh )
Copyright © 2009 AGA Institute Terms and Conditions

3. Figure 2
Heterogeneity among the studies. The relative risk of NHL (compared with SEER) is plotted against the absolute rate per 10,000 patient-years for each study. Twenty of the 26 studies did not have any reported cases of lymphoma. The outlier study with the highest rate is Ljung et al.16
Clinical Gastroenterology and Hepatology 2009 7, DOI: ( /j.cgh )
Copyright © 2009 AGA Institute Terms and Conditions