Prognostic Significance of Platelet-to-Lymphocyte Ratio in Cholangiocarcinoma: A Meta-Analysis

Table 2

Assessment of study quality.

Author	Selection	Comparability	Outcome	Total score
Buettner	★★★★	★★	★★★	9
Chen	★★★★	★★	★★	8
Cho	★★★★	★★	★★	8
Hu	★★★	★	★★	6
Kitano	★★★★	★	★	6
Ramen	★★★	★★	★★★	8
Saito	★★★★	★	★	6
Yoh	★★★★	★	★★	7
Zhang	★★★★	★	★	6