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Table 9 Summary of the characteristics of the studies reviewed in Table 8

From: Helicobacter pylori infection and circulating ghrelin levels - A systematic review

Characteristic n %
Study Design Cohort 12 92.31
  RCT 1 7.69
Gender studied Both 11 84.62
  Men 1 7.69
  Women 1 7.69
Region Africa 1 7.69
  Asia 8 61.54
  Europe 4 30.77
Health status Both 2 15.38
  Healthy 3 23.08
  Sick 8 61.54
Age Group Adults 11 84.62
  Children 2 15.38
Type of Sickness GI Symptoms 9 90
  PEM 1 10
HP assessment methods used One 3 23.08
  Two or more 10 76.92
Assay Type ELISA 2 15.38
  Commercial RIA 8 61.54
  In-house RIA 3 23.08
Sample Size Above 20 6 46.15
  Below 20 7 53.85
Sample Storage -70°C and below 11 84.62
  Above -70°C 1 7.69
  Not described 1 7.69
Sample type Plasma 11 84.62
  Serum 2 15.38
BMI of participants Normal 10 76.92
  Others 3 23.07
Duration of follow-up 4 weeks & below 6 46.15
  Above 4 weeks 6 46.15
  Not recorded 1 7.69
Change in ghrelin after cure Decreased 3 23.08
  Increased 3 23.08
  No difference 7 53.85