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Table 3 Quality assessment of included studies according to the Newcastle-Ottawa Scale

From: Association of rs610604 in TNFAIP3 and rs17728338 in TNIP1 gene polymorphisms with psoriasis susceptibility: a meta-analysis of case-control studies

Item/Study Adequate definition of cases Representativeness of cases Selection of control subjects Definition of control subjects Control for important factor or additional factor Exposure assessment Same method of ascertainment for all subjects Non-response rate Total score
Bowes [19] 2011 1 0 1 1 1 1 1 1 7
Das [30] 2015 1 0 1 1 1 1 1 1 7
Haase [20] 2014 1 0 1 1 1 1 1 1 7
Han [31] 2016 1 0 1 1 1 1 1 1 7
Indhumathi [21] 2015 1 0 1 1 1 1 1 1 7
Li [22] 2014 1 0 0 1 1 1 1 1 6
Munir [26] 2015 1 0 1 1 1 1 1 1 7
Nair [27] 2009 1 0 1 1 1 1 1 1 7
Nikamo [28] 2015 1 0 0 1 1 1 1 1 6
Villarreal-Martínez [29] 2016 1 0 1 1 1 1 1 1 7
Yang [23] 2011 1 0 1 1 1 1 1 1 7
Zhang, Z [24] 2015 1 0 1 1 1 1 1 1 7
Zhang, C [25] 2015 1 0 0 1 1 1 1 1 6