Table 6 Summary of the characteristics of the studies reviewed in Table 5
From: Helicobacter pylori infection and circulating ghrelin levels - A systematic review
| 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 |
