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. 2021 Mar 31;11(3):e040465. doi: 10.1136/bmjopen-2020-040465

Table 4.

Assessment of quality of evidence by the Grades of Recommendation, Assessment, Development and Evaluation system

Outcome: rheumatoid arthritis-associated interstitial lung disease
Prognostic factors Analysis GRADE factors
Phase Study limitations Inconsistency Indirectness Publication bias Imprecision Moderate/large effect size Dose effect Overall quality
Anti-CCP antibody positivity Univariate 1 + + + Very low
Multivariate 1 + + + Very low
Anti-CCP antibody titre Univariate 1 + + + Very low
Multivariate 1 + + + Low

CCP, cyclic citrullinated peptite;GRADE, Grades of Recommendation, Assessment, Development and Evaluation.