Table 2 Risk of bias for each study based on QUIPS quality assessment
From: Adiponectin is associated with poor prognosis in carcinoma patients: evidence from a meta-analysis
Study | Study partici-pation | Study attrition | Prognostic factor measurement | Outcome measure-ment | Confounding measurement and account | Analysis approaches | Overall appraisal of potential bias |
|---|---|---|---|---|---|---|---|
Wang 2014 [6] | Yes | Yes | Yes | Partly | Yes | Yes | Moderate |
Siegel 2014 [7] | Yes | Yes | Yes | Yes | Yes | Yes | Low |
Cubukcu 2014 [10] | Yes | Yes | Yes | Yes | Yes | Yes | Low |
Canhoroz 2014 [24] | Yes | Yes | Yes | Yes | Yes | Yes | Low |
Lee 2014 [9] | Yes | Yes | Yes | Yes | Yes | Yes | Low |
Shin 2014 [8] | Yes | Yes | Yes | Yes | Yes | Yes | Low |
Kerenidi 2013 [11] | Yes | Yes | Yes | Partly | No | Yes | High |
Tsukada 2011 [12] | Yes | Yes | Yes | Partly | Yes | Yes | Moderate |
Petridou 2009 [13] | Yes | Yes | Yes | Yes | Yes | Yes | Low |
Ferroni 2007 [25] | Yes | Yes | Yes | Yes | No | Yes | High |