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Table 4 Quality assessment of cohort studies based on the JBI critical appraisal checklist

From: Association of Helicobacter pylori infection with the risk of metabolic syndrome and insulin resistance: an updated systematic review and meta-analysis

Studies Q1 Q2 Q3 Q4 Q5 Q6 Q7 Q8 Q9 Q10 Q11 Total Score
Jeon et al (2012) [40] Y Y Y Y Y Y Y N Y Y Y 10
Shin et al (2012) [71] Y Y Y Y Y Y Y Y UC UC Y 9
Hsieh et al (2013) [72] Y Y Y Y Y Y Y N Y UC Y 9
Sayilar et al (2015) [73] Y Y Y Y Y Y Y Y N N Y 9
Q1: Were the two groups similar and recruited from the same population?
Q2: Were the exposures measured similarly to assign people to both exposed and unexposed groups?
Q3: Was the exposure measured in a valid and reliable way?
Q4: Were confounding factors identified?
Q5: Were strategies to deal with confounding factors stated?
Q6: Were the groups/participants free of the outcome at the start of the study (or at the moment of exposure)?
Q7: Were the outcomes measured in a valid and reliable way?
Q8: Was the follow up time reported and sufficient to be long enough for outcomes to occur?
Q9: Was follow up complete, and if not, were the reasons to loss to follow up described and explored?
Q10: Were strategies to address incomplete follow up utilized?
Q11: Was appropriate statistical analysis used?
  1. Y: Yes; N: No; UC: Unclear; NP: Not applicable