Perioperative management of antiplatelet therapy in patients undergoing non-cardiac surgery following coronary stent placement: a systematic review

Table 2 Quality assessment for included observational studies

Author, year	Study design	Sample representativeness	Assessment of outcomes	Follow-up rate	Address balancing for sample differences	Statistical methods used
Alshawabkeh, 2013	Retrospective	■	■	N/A	♦	N/A
Assali, 2009	Retrospective	■	■	N/A	♦	N/A
Bolad, 2011	Retrospective	■	■	N/A	■	♦
Brotman, 2007	Retrospective	■	■	N/A	■	♦
Capodanno, 2015	Retrospective	■	■	N/A	■	■
Cerfolio, 2010	Prospective	■	■	■	■	■
Choi, 2010	Prospective	■	■	■	■	♦
Conroy, 2007	Retrospective	■	■	N/A	♦	N/A
Egholm, 2016	Case-control	■	■	N/A	■	■
Hawn, 2013	Case-Control	■	■	N/A	■	■
Marcos, 2011	Retrospective	■	■	N/A	♦	N/A
Sonobe, 2011	Retrospective	Unclear	Unclear	N/A	♦	N/A
Tanaka, 2014	Retrospective	■	■	N/A	♦	N/A
Tanaka, 2016	Retrospective	■	■	N/A	♦	N/A
Yamamoto, 2014	Retrospective	■	■	N/A	♦	N/A

Sample representativeness: all patients/consecutive sample = square
Assessment of outcomes: medical record review = square
Follow-up rate: > 80% = square
Address balancing of sample differences: yes = square, no = diamond
Statistical methods used: multivariate methods = square, univariate methods = diamond
Adapted from Hayden et al. [12]

ISSN: 2046-4053