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Table 2 Quality assessment of included studies based on the Quality In Prognosis Studies (QUIPS)

From: Prognostic values of microRNA-130 family expression in patients with cancer: a meta-analysis and database test

Study [Ref.] Quality evaluation of prognosis study Total scorea Level of evidenceb
Study participation Study attrition Prognostic factor measurement Outcome measurement Study confounding Statistical analysis and reporting
Jia 2019 [44] Yes Partly Yes Yes Partly Yes 7 2b
Peng 2018 [18] Yes Partly Yes Yes Partly Yes 7 2b
Liu 2018 [45] Yes Partly Partly Yes Partly Yes 5 2b
Yang 2018 [46] Yes Partly Yes Yes Partly Yes 7 2b
Asukai 2017 [16] Partly Partly Partly Yes Partly Partly 6 2b
Zhou 2017 [47] Yes Partly Yes Partly Partly Partly 7 2b
Chen 2016 [11] Yes Partly Yes Partly Partly Partly 5 2b
Jiang 2016 [17] Partly Partly Partly Yes Partly Partly 5 2b
Yuan 2016 [14] Yes Partly Yes Yes Partly Yes 8 1b
He 2014 [15] Yes Yes Yes Yes Partly Yes 8 1b
Li 2014 [21] Yes Yes Yes Yes Partly Yes 7 2b
Wang 2012 [48] Partly Partly Yes Yes Partly Yes 6 2b
Hashimoto 2019 [49] Yes Yes Yes Yes Partly Yes 8 1b
Ulivi 2019 [50] Partly Partly Yes Yes Partly Yes 6 2b
Hu 2018 [51] Yes Yes Yes Partly Partly Partly 9 2b
Ecke 2017 [52] Yes Partly Yes Yes Partly Yes 7 2b
Li 2017 [22] Yes Partly Yes Yes Partly Yes 7 2b
Chang 2016 [23] Yes Yes Yes Partly Partly Partly 8 2b
Sheng 2015 [24] Partly Partly Yes Yes Partly Yes 7 2b
Kjersem 2014 [30] Partly Partly Yes Partly Partly Partly 6 2b
Wang 2014 [25] Partly Partly Yes Yes Partly Yes 7 2b
Colangelo 2013 [26] Partly Partly Yes Partly Partly Partly 5 2b
Zhao 2013 [31] Partly Partly Yes Yes Partly Yes 6 2b
Nakatani 2012 [53] Partly Partly Partly Yes Partly Yes 5 2b
  1. aQuality assessment of included studies based on the Newcastle–Ottawa Scale
  2. bThe levels of evidence were estimated for all included studies with the Oxford Centre for Evidence Based Medicine criteria