Table F-2Detailed strength of evidence grading table, OME recurrence

Intervention, Outcome, Time to OutcomeNumber of Studies; SubjectsRisk of BiasConsistencyDirectnessPrecisionStrength of Evidence Grade
Magnitude of Effect
Shorter-term v longer-term TT, recurrence of OME4, 747MediumConsistentDirectImpreciseLow, OME recurrence higher in shorter-term TT after one year
Shah v. mini-shah tube1, 116MediumUnknown, single studyDirectImpreciseInsufficient, single small study, Shah better
Teflon Shepard TT vs. silicone Goode TT vs. Silicone Paparella TT1; 220MediumUnknown, single studyDirectImpreciseInsufficient, single observational study, silicone best
Permavent silicone Shah v. polyethelyne Shah1; 25MediumUnknown, single studyDirectImpreciseInsufficient, single small study, statistical difference not reported

Abbreviations: MEE, middle ear effusion; TT, tympanostomy tubes; yr, year.

From: Appendix F, Detailed Strength of Evidence Tables

Cover of Otitis Media With Effusion: Comparative Effectiveness of Treatments
Otitis Media With Effusion: Comparative Effectiveness of Treatments [Internet].
Comparative Effectiveness Reviews, No. 101.
Berkman ND, Wallace IF, Steiner MJ, et al.

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