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. 2011 Jan 26;11:7. doi: 10.1186/1471-230X-11-7

Table 6.

Summary of the characteristics of the studies reviewed in Table 5

Characteristic n n %
Study Design Case control 7 25.93
Cohort 9 33.33
Cross-sectional 11 40.74
Gender studied Both 21 77.78
Men 3 11.11
Women 3 11.11
Region Asia 13 48.15
Europe 11 40.74
North America 3 11.11
Health status Both 4 14.81
Healthy 9 33.33
Sick 14 51.85
Age Group Adults 23 85.19
Both 2 7.41
Children 2 7.41
Type of Sickness Cancer 3 17.65
GI symptoms 11 64.71
Others† 3 17.64
HP assessment methods used Not Described 5 18.52
One 7 25.93
Two or more 15 55.56
Assay Type Commercial EIA 4 14.81
Commercial ELISA 3 11.11
Commercial RIA 14 51.85
In-house RIA 5 18.52
Not stated 1 3.7
Sample Size 50 and below 6 22.22
51-200 16 59.26
201 and above 5 18.52
Sample Storage -70C and above 19 70.37
Below -70C 4 14.81
Not Described 4 14.81
Sample type Plasma 17 62.96
Serum 10 37.04
BMI of participants Normal 15 57.69
Not Stated 2 7.69
Obese 2 7.69
Various 4 15.38
low to normal 3 11.54

†Others include Crohn's disease (1), diabetes mellitus (1) and multiple conditions (1)