Clinical Outcomes of Drug-Eluting versus Bare-Metal In-Stent Restenosis after the Treatment of Drug-Eluting Stent or Drug-Eluting Balloon: A Systematic Review and Meta-Analysis

Table 3

Risk of bias assessment.

Study	1	2	3	4	5	6	7	8	Total
Berta	A	A	A	A	A	B	A	A	8
Lee	A	A	A	B	A	B	A	A	7
Fernando	A	A	A	B	A	B	A	A	7
Beatriz	A	A	A	A	A	B	A	A	8
Markus	A	A	A	B	A	B	A	A	7
Christoph	A	A	A	A	A	B	A	B	8
Ralph	A	A	A	A	A	B	A	B	8
Daniel	A	A	A	B	A	B	A	A	7
Robert	A	A	A	B	A	B	A	A	7
Negar	A	A	A	B	A	B	A	A	7
Jose	A	A	A	B	A	B	A	A	7
Heng	A	A	A	B	A	B	A	A	7
Fernando	A	A	A	B	A	B	A	A	7
Mohammad	A	A	A	B	A	B	A	A	7
Cheol	A	A	A	A	A	B	A	A	8
Yan	A	A	A	B	A	B	A	A	7
Kensaku	A	A	A	A	A	B	A	A	8
Alexandre	A	A	A	B	A	B	A	C	6
Gert	A	A	A	B	A	B	A	B	7

1: representativeness of the exposed cohort; 2: selection of the nonexposed cohort; 3: ascertainment of exposure; 4: outcome of interest was not present at the beginning of study; 5: comparability of cohorts; 6: assessment of outcome; 7: long enough follow-up; 8: adequacy of follow-up; A: 1 score; B: 0/1 score; C: 0 score.