First author (year) | Period of study | Patients, n | Deaths, n (%) | Preventable (%) |
Freed (2009)4 | 1996–2005 | 4294 | 16 (0.37) | 7 (44) |
Janiec (2010)5 | 2001–2009 | 3924 | 15 (0.38) | 2 (13) |
Cakalagaoglu (2013)6 | 2002–2007 | 2570 | 24 (0.93) | 11 (46) |
Farid (2013)7 | 2006–2012 | 2549 | 7 (0.27) | 3 (43) |
Current study | 2009–2019 | 3103 | 11 (0.35) | 6 (55) |