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Table 2 Newcastle–Ottawa scale for included non-RCT studies

From: Is microsatellite instability-high really a favorable prognostic factor for advanced colorectal cancer? A meta-analysis

Author Year Study design Selection Comparability Outcome total
1 2 3 4 1 2 1 2 3
Alex, A.K [12] 2017 Non-RCT 1 1 1 1 1 1 1 1 1 9
Chouhan [13] 2018 Non-RCT 1 1 1 1 1 0 1 1 1 8
des Guetz, G [14] 2007 Non-RCT 1 1 1 1 1 1 0 1 1 8
Drucker, A [15] 2013 Non-RCT 1 1 1 1 1 0 1 1 0 7
Elsaleh, H [16] 2001 Non-RCT 1 1 1 1 1 1 0 1 1 8
Fujiyoshi, K [17] 2017 Non-RCT 1 1 1 1 1 1 1 0 1 8
Guidoboni, M [7]. 2001 Non-RCT 1 1 1 1 1 0 1 1 1 8
Hemmink i [18] 2000 Non-RCT 1 1 1 1 1 1 1 1 1 9
Jover [19] 2006 Non-RCT 1 1 1 1 1 0 1 0 1 7
Jung, S.H [20]. 2016 Non-RCT 1 1 1 1 1 1 1 1 1 9
Kim, C. G [21]. 2016 Non-RCT 1 1 1 1 1 0 1 1 1 8
Kim, J.E [23]. 2017 Non-RCT 1 1 1 1 1 1 0 1 1 8
Kim, J.E [22]. 2011 Non-RCT 1 1 1 1 1 1 1 1 1 9
Kim, S.H [24]. 2013 Non-RCT 1 1 1 1 1 0 1 0 1 7
Lanza, G [44]. 2006 Non-RCT 1 1 1 1 1 1 0 1 0 7
Li, P [25]. 2017 Non-RCT 1 1 1 1 1 1 1 1 1 9
Liu [26] 2018 Non-RCT 1 1 1 1 1 1 1 1 1 9
Ma, J [27]. 2015 Non-RCT 1 1 1 1 1 1 1 1 1 9
Malesci, A [28]. 2007 Non-RCT 1 1 1 1 1 0 1 1 0 7
Mohan, H.M [29]. 2016 Non-RCT 1 1 1 1 1 1 1 1 1 9
Oh, S.Y [32]. 2013 Non-RCT 1 1 1 1 1 0 1 0 1 7
Tan, W. J [37]. 2017 Non-RCT 1 1 1 1 1 1 0 1 1 8
Tran, B [38]. 2011 Non-RCT 1 1 1 1 1 1 1 1 1 9
Wright, C. M [41]. 2000 Non-RCT 1 1 1 1 1 0 1 1 1 8
Zaanan, A [43]. 2011 Non-RCT 1 1 1 1 1 1 0 0 0 6
Zaanan, A [42]. 2010 Non-RCT 1 1 1 1 1 1 0 1 1 8