First Author, Country, and Year | Selection Bias | Study Design | Confounders | Blinding | Data Collection Methods | Withdrawal and Dropouts | Global Rating |
---|---|---|---|---|---|---|---|
Standard versus Non-standard Face to Face CPR Training | |||||||
 Ko RJM Singapore, 2018 | Strong | Strong | Strong | Moderate | Strong | Moderate | Strong |
 Beck S Germany, 2015 | Strong | Strong | Strong | Weak | Moderate | Moderate | Moderate |
 Charlier N Belgium, 2016 | Moderate | Strong | Strong | Weak | Strong | Moderate | Moderate |
 Rossler B Austria, 2013 | Strong | Strong | Strong | Weak | Moderate | Moderate | Moderate |
 Chamberlain D UK, 2001 | Strong | Strong | Strong | Weak | Moderate | Moderate | Moderate |
 Choi HS Korea, 2015 | Strong | Moderate | Strong | Moderate | Weak | Moderate | Moderate |
Standard versus Hybrid CPR Training | |||||||
 Nakanishi T Japan, 2017 | Moderate | Moderate | Strong | Strong | Moderate | Strong | Strong |
 Heard DG USA, 2019 | Strong | Strong | Strong | Weak | Moderate | Moderate | Moderate |
 Reder S USA, 2006 | Strong | Strong | Strong | Weak | Moderate | Moderate | Moderate |
Standard versus Online CPR Training | |||||||
 Todd KH USA, 1998 | Moderate | Strong | Strong | Moderate | Moderate | Moderate | Strong |
 Rehberg RS USA, 2009 | Moderate | Strong | Strong | Weak | Strong | Moderate | Moderate |
 Beskind DL USA, 2016 | Strong | Strong | Strong | Weak | Strong | Moderate | Moderate |
 Todd KH USA, 1999 | Moderate | Strong | Strong | Moderate | Strong | Moderate | Strong |
 Ahn JY Korea, 2011 | Strong | Moderate | Strong | Moderate | Moderate | Moderate | Strong |
 Kardong-Edgren SE USA, 2010 | Moderate | Moderate | Strong | Weak | Strong | Moderate | Moderate |
 Diez N Spain, 2013 | Moderate | Strong | Strong | Strong | Strong | Moderate | Strong |
 Ali S India, 2019 | Moderate | Strong | Strong | Moderate | Strong | Strong | Strong |
 Isbye DL Denmark, 2006 | Strong | Moderate | Strong | Strong | Strong | Strong | Strong |
 Nas J Netherland, 2020 | Strong | Strong | Strong | Strong | Strong | Strong | Strong |
 Einspruch EL USA, 2007 | Strong | Strong | Strong | Strong | Strong | Strong | Strong |