Review Article

The Association between Obesity and Cancer Risk: A Meta-Analysis of Observational Studies from 1985 to 2011

Table 2

Population-attributable risk percent in Canada for obesity and cancer.

CancerMales MalesFemalesFemales
RR and 95% CIPopulation-attributable risk Percent RR and 95% CIPopulation-attributable risk Percent

Colon1.57 (1.48, 1.65)*11.5% (9.9, 13.1)*1.19 (1.04, 1.36)*4.2% (0.9, 7.7)
EndometrialNANA1.85 (1.3, 2.65)*16.5% (6.5, 27.7)*
Esophageal1.23 (0.58, 2.60)2.04 (1.18, 3.55)*19.4% (4.0, 37.2)*
Gallbladder1.47 (1.17, 1.85)*9.7% (3.7, 16.3)*1.82 (1.32, 2.50)*16% (6.9, 25.8)*
Leukemia1.16 (0.88, 1.52)1.32 (1.08, 1.60)*6.9% (1.8, 12.2)*
Malignant melanoma1.26 (1.07, 1.48)*5.6% (1.6, 9.9)*0.95 (0.84, 1.07)
Multiple myeloma0.58 (0.36, 0.93)*1.20 (0.99, 1.45)
Non-Hodgkin lymphoma1.09 (0.98, 1.21)0.91 (0.86, 0.97)*
Pancreatic1.36 (1.07, 1.73)*7.6% (1.6, 17.5)*1.34 (1.22, 1.46)*7.3% (4.9, 9.6)*
Postmenopausal breastNANA1.25 (1.07, 1.46)*5.5% (1.6, 9.6)*
Rectal1.22 (0.91, 1.64)1.03 (0.74, 1.44)
Renal1.57 (1.38, 1.77)*11.5% (8.0, 15.0)*1.72 (1.58, 1.88)*14.3% (12.0, 16.9)*
Thyroid1.12 (0.72, 172)1.03 (0.87, 1.23)

* Statistically significant at