Table 3.

The meta-regression analysis of all characteristics in both patients with colorectal cancer and controls

Characteristics	Studies (number)	Patients		Controls
		Coefficient	p-value	Coefficient	p-value
Age	36	−0.21	0.012	0.18	0.019
Gender	38	−8.45	0.076	8.37	0.073
BMI	29	0.41	0.039	−0.35	0.091
WHR	14	5.04	0.387	−10.47	0.282
WC	19	0.14	0.008	−0.09	0.177
DM	15	−3.71	0.913	8.86	0.840
Physical activity	6	−0.05	0.785	0.04	0.842
Physical inactivity	9	1.46	0.836	−7.74	0.315
Smoking	20	−10.59	0.032	10.59	0.043
Family history	9	−0.66	0.842	0.34	0.909
Glucose	10	0.93	0.640	2.37	0.609
Insulin	10	0.28	0.316	0.03	0.930
CRP	12	−0.37	0.015	0.20	0.698

Abbreviations: BMI, body mass index; WHR, waist–hip ratio; WC, waist circumference; DM, diabetes mellitus; CRP, C-reactive protein.