The Efficacy and Safety of Nicorandil for Periprocedural Myocardial Injury in Patients Undergoing PCI: A Meta-Analysis

Table 2

Assessment of methodological quality of included studies.

Study	Bias arising from the randomisation process	Bias due to deviations from intended interventions	Bias due to missing outcome data	Bias in measurement of the outcome	Bias in selection of the reported result	Overall bias
Ono et al. [29]	Low	Low	Low	Low	Low	Low
Ishii et al. [23]	Low	Low	Low	Low	Low	Low
J. Kim et al. [24]	Low	Low	Low	Low	Low	Low
Murakami et al. [27]	Low	Low	Low	Low	Low	Low
S. Kim et al. [25]	Low	Low	Low	Low	Low	Low
Hwang et al. [22]	Low	Low	Low	Low	Low	Low
Hirohata et al. [21]	Some concerns	Low	Low	Low	Low	Some concerns
Yang et al. [31]	Low	Low	Low	Low	Low	Low
Nishimura et al. [28]	Low	Low	Low	Low	Low	Low
Miyoshi et al. [26]	Low	Low	Low	Low	Low	Low
Feng et al. [19]	Low	Low	Low	Low	Low	Low
Ye et al. [32]	Low	Low	Low	Low	Low	Low
Ejiri et al. [18]	Low	Low	Low	Low	Low	Low
Kawakita et al. [20]	Low	Low	Low	Low	Low	Low
Wang [30]	Low	Low	Low	Low	Low	Low