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Table 2 Quality assessment according to the Newcastle-Ottawa Scale

From: The effect of bystander cardiopulmonary resuscitation on the survival of out-of-hospital cardiac arrests: a systematic review and meta-analysis

Study Selection Comparability Outcome Total
Cummins(1985) 4 2 2 8
Swor(1995) 4 2 2 8
Weston(1997) 3 2 2 7
Stiell(1999) 3 2 2 7
Holmberg(2000) 3 2 2 7
Finn(2001) 4 1 2 7
Herlitz(2003) 3 1 2 6
Herlitz(2005) 4 2 2 8
Iwami(2007) 4 2 2 8
Herlitz(2008) 3 2 2 7
Nordberg(2009) 3 2 2 7
Lindner(2011) 3 2 2 7
Wissenberg(2013) 4 1 2 7
Lai(2015) 3 2 2 7
Nehme(2015) 3 2 2 7
Hasselqvist-Ax(2015) 4 2 2 8
Gaieski(2017) 4 2 2 8
Tanaka(2017) 4 2 2 8