Table.

Correlation between seropositivity for Helicobacter pylori infection and various vascular risk factors in published studies of at least 500 people

Characteristic	No seropositive	No seronegative	Average (SE) difference between groups†	Z ratio‡
Total cholesterol (mmol/l)5-16	5106	5274	0.04 (0.02)	1.5
Systolic blood pressure (mm Hg)6 7 9 10 12-16 20	4502	4795	0.9 (0.4)	2.1*
Diastolic blood pressure (mm Hg)6 7 9 10 12-16 20	4502	4795	0.3 (0.3)	1.2
Body mass index (kg/m2)6-8 10 12-16 20	4459	4739	0.37 (0.09)	4.2168
High density lipoprotein cholesterol (mmol/l)5 6 8-12 15	4109	4316	−0.032 (0.008)	4.3168
Triglyceride (mmol/l)5-7 9 11-13 15 16	3431	3851	0.02 (0.04)	0.6
Fibrinogen (g/l)5 7 10 13-19	2986	2228	−0.02 (0.03)	1.0
Plasma viscosity (mPa.s)10 18	1270	942	0.01 (0.004)	2.2*
White cell count (109/l)5 12 13 18 19 21	664	512	0.16 (0.11)	1.4
Blood glucose (mmol/l)5 9 12	570	492	0.14 (0.06)	2.4*
C reactive protein (mg/l)19 22	311	292	−0.2 (0.5)	0.4

^†Inverse variance weighted average of differences within study (mean in seropositive group minus mean in seronegative group).  

^‡Ratio of average of differences to SE.  

^*P<0.05;  

¹⁶⁸P<0.0001.