Obesity and colorectal cancer risk: A meta-analysis of cohort studies

Table 3 Comparison of the highest-to-lowest quantiles of BMI, WC and WHR to predict colorectal cancer risk

Body size measurement	Category	Pooled effect estimate (95% CI)	Pheterogeneity	Number of studies
BMI	Male (colon cancer)	1.59 (1.35-1.86)	0.82	10
	Female (colon cancer)	1.22 (1.08-1.39)	0.15	12
	Male (rectal cancer)	1.16 (0.93-1.46)	0.03	5
	Female (rectal cancer)	1.23 (0.98-1.54)	0.93	6
Waist circumference	Male (colon cancer)	1.68 (1.36-2.08)	0.31	6
	Female (colon cancer)	1.48 (1.19-1.84)	0.79	4
	Male (rectal cancer)	1.26 (0.90-1.77)	0.95	2
	Female (rectal cancer)	1.23 (0.81-1.86)	-	1
Waist-to-hip ratio	Male (colon cancer)	1.91 (1.46-2.49)	0.23	3
	Female (colon cancer)	1.49 (1.23-1.81)	0.76	4
	Male (rectal cancer)	1.93 (1.19-3.13)	-	1
	Female (rectal cancer)	1.20 (0.81-1.78)	-	1