Lipoprotein (a) levels are elevated in psoriasis: An updated systematic review and meta-analysis

Table 3 Quality appraisal of the included studies using the Newcastle-Ottawa Scale for case-control studies

Ref.	Selection				Comparability	Exposure			Total score
	Case definition	Case representativeness	Controls selection	Controls definition		Ascertainment	Same method of ascertainment	Non- response rate
Jones et al[16]	Yes	Yes	Yes	Yes	Yes, yes	Yes	Yes	-	8/9
Rocha-Pereira et al[15]	Yes	Yes	Yes	Yes	Yes, yes	Yes	Yes	-	8/9
Uyanik et al[17]	Yes	Yes	Yes	Yes	Yes, yes	Yes	Yes	-	8/9
Pietrzak et al[18]	Yes	Yes	-	Yes	Yes, yes	Yes	Yes	-	7/9
Asefi et al[23]	Yes	Yes	Yes	Yes	Yes, yes	Yes	Yes	-	8/9
Ferretti et al[20]	Yes	Yes	Yes	Yes	Yes, yes	Yes	Yes	-	8/9
Oliviero et al[21]	Yes	Yes	Yes	Yes	Yes, yes	Yes	Yes	-	8/9
Nemati et al[22]	Yes	Yes	Yes	Yes	Yes, yes	Yes	Yes	-	8/9
Asefi et al[25]	Yes	Yes	Yes	Yes	Yes, yes	Yes	Yes	-	8/9
Papagoras et al[24]	Yes	Yes	Yes	Yes	Yes	Yes	Yes	-	7/9
Sunitha et al[26]	Yes	Yes	Yes	Yes	Yes, yes	Yes	Yes	-	8/9
Wadhwa et al[28]	Yes	Yes	Yes	Yes	Yes, yes	Yes	Yes	-	8/9
Miao et al[29]	Yes	Yes	-	Yes	Yes, yes	Yes	Yes	-	7/9
Garshick et al[31]	Yes	Yes	Yes	Yes	Yes	Yes	Yes	-	7/9
Wang et al[30]	Yes	Yes	Yes	Yes	Yes, yes	Yes	Yes	-	8/9