Table 2

- The quality evaluation of the cohort studies using the Modified Newcastle-Ottawa scale.

ArticlesSelectionComparabilityOutcomeQuality score
Representativeness of the sampleSelection of non-exposed groupAscertainment of exposureOutcome absent at the start of studyCohort statistical analysisEvaluation of outcomeSufficient follow-up duration for outcomes to occurAdequacy of follow-up
Andreassi et al44★0★0★0★★Fair
Auvinen et al33★★★★★★★★Good
Ciraj-Bjelac et al18★0★★★★★★Fair
Ciraj-Bjelac et al17★0★★★★★★Fair
Domienik-Andrzejewska et al45★★★0★★★★Good
Matsubara et al40★0★★★★★★Fair
Milacic et al47★★★★★0★★Good
Rajabi et al48★0★★★★★★Fair
Scheidemann-Wesp et al49★★00★★★★Fair
Vano et al19★0★★★★★★Fair
Vano et al50★0★★★★★★Fair

  • ★Quality score assigned for each category as per the Newcastle-Ottawa Scale criteria