Clinical Significance of UCA1 to Predict Metastasis and Poor Prognosis of Digestive System Malignancies: A Meta-Analysis

Table 2

Newcastle-Ottawa quality for included studies in this meta-analysis.

First author and year [ref.]	Selection (score)				Comparability (score)		Outcome (score)			Total score
	Representativeness of exposed	Selection of nonexposed	Ascertainment of exposure	No interest before study	Study design (cohort study)	Control for other confounding factors	Assessment of outcome	Follow-up time long enough (>5 years )	Adequacy number of follow-ups (>80% )
Han 2014 [17]	1	1	1	0	1	0	1	1	1	7
Li 2014 [22]	1	1	1	0	1	1	1	1	1	8
Wang 2015 [13]	1	1	1	1	1	1	1	1	1	9
Zheng 2015 [15]	1	1	1	0	1	1	1	1	1	8
Yang 2015 [14]	1	1	1	0	1	1	1	1	1	8
Ni 2015 [18]	1	1	1	0	1	1	1	0	1	7
Chen 2015 [21]	1	1	1	0	1	1	1	1	1	8
Tao 2015 [19]	1	1	1	0	1	1	1	1	1	8
Bian 2016 [20]	1	1	1	0	1	1	1	1	1	8
Shang 2016 [16]	1	1	1	0	1	1	1	1	1	8