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Table 5 Grading of Recommendations Assessment, Development and Evaluation (GRADE) according to Schünemann 2009 [20]

From: What is the impact of the adjunctive use of omega-3 fatty acids in the treatment of periodontitis? A systematic review and meta-analysis

Quality assessment

Summary of findings

Importance

No of patients

Effect

Quality

No of studies

Design (Randomized controlled trial)

Limitations

Inconsistency

Indirectness

Imprecision

Other considerations

Omega 3

Control

SMD

[95% Conf. Interval]

PD after 3 months

5

Yes

no serious limitations

no serious inconsistencya

no indirectness

serious imprecision

none

132

133

−3.931

[−4.446,-3.417]

moderate

high

CAL after 3 months

5

Yes

no serious limitations

no serious inconsistencya

no indirectness

serious imprecision

none

132

133

−3.521

[−3.982,-3.059]

moderate

high

BOP after 3 months

1

Yes

no serious limitations

no serious inconsistency

no indirectness

very serious imprecision

none

40

40

n/a

low

low

  1. athe missing possible positive effect in reduction of PD and CAL could be due to low number of participants in Martinez et al. 2014 [31] and low-dose application of omega-3 in Keskiner et al. 2017 [32], SMD Standardized mean difference