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Table 4 Reporting and methodological quality

From: Association between micronutrient deficiency and acute respiratory infections in healthy adults: a systematic review of observational studies

Quality AssessedStudy DesignCohort & Cross sectional StudiesCase-Control
Author, YearLaaksi, 2007He, 2013Rafiq, 2018Sabetta, 2010Berry, 2011Lee, 2018Jovanovich, 2014Nanri, 2017
Section/ Domain
Reporting QualityaTitle, Abstract and IntroductionHighFairHighFairHighHighHighHigh
MethodsHighHighHighHighHighHighHighHigh
ResultsLowHighLowHighHighHighHighHigh
DiscussionFairLowHighHighHighHighHighHigh
Other informationHighHighHighHighHighHighHighHigh
OverallLowFairFairHighHighHighHighHigh
Methodology QualitybSelectionHighHighHighHighHighHighHighHigh
MisclassificationHighHighLowHighHighLowHighHigh
DetectionFairLowLowHighLowLowHighHigh
ConfoundingLowLowHighLowHighHighHighHigh
Other (Inappropriate sample size, attrition)LowLowHighLowLowLowLowLow
  1. Y Yes, N No, CT Can’t tell, N/A Not Applicable, P Partially reported
  2. aAssessed with the STROBE statement
  3. bAssessed by the NHLBI Quality Assessment Tool for Observational Cohort, Cross-Sectional and Case-control studies; a high quality indicates a low risk of bias in the assessed domain, and vice versa