Single versus multiple coverage of pipeline embolization device for treatment of intracranial aneurysms: a systematic review

Table 3 The table displays the methodologic quality judgment for each of three domains of bias

Study	Selection				Comparability	Outcome
Study	Representativeness of the exposed cohort	Selection of the non-exposed cohort	Ascertainment of exposure	Demonstration that outcome of interest was not present at start of study	Comparability of cohorts on the basis of the design or analysis	Assessment of outcome	Was follow-up long enough for outcomes to occur	Adequacy of follow-up of cohorts
Chalouhi 2014	☆	☆	☆	☆	☆☆	☆	☆
Kabbasch 2016	☆	☆	☆	☆	☆☆	☆	☆	☆
Waqas 2019	☆	☆	☆	☆	☆☆	☆	☆
Link 2021	☆	☆	☆	☆	☆☆	☆	☆	☆
Vranic 2022	☆	☆	☆	☆	☆☆	☆	☆