From: Open-chest cardiopulmonary resuscitation versus closed-chest cardiopulmonary resuscitation in patients with cardiac arrest: a systematic review and meta-analysis
Study (year)
Masaya 1993 [20]
Azad 1994 [21]
Anastasia 1998 [22]
Yoshihiro 2011 [26]
Kodai 2016 [23]
Matthew 2016 [24]
Akira 2017 [25]
Selection
5
4
Comparability
1
Outcome
2
3
Total
8
6
7