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Table 1 The detailed quality assessment of prognostic studies

From: Relationship of lymphovascular invasion with lymph node metastasis and prognosis in superficial esophageal carcinoma: systematic review and meta-analysis

Author

Years Included

Region

Comment 1

Comment 2

Comment 3

Comment 4

What are the results

Leggett (2015) [7]

1995-2011

USA

Yes

Yes

Yes

Yes

Survival curve, CI is narrow, conclusion is promotable

Yamashina (2013) [8]

1995-2010

Japan

Yes

Yes

Yes

Yes

CI is relative marrow, conclusion is promotable

Tanaka (2014) [9]

1988-2010

Japan

Yes

Yes

Yes

Yes

CI is narrow, conclusion is promotable

Xue (2018) [10]

1990-2004

China

Yes

Yes

Yes

Yes

CI is relative marrow, conclusion is relative promotable

  1. CI Confidence interval