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Fig. 2 | BMC Pulmonary Medicine

Fig. 2

From: Circulating tumor cells prior to initial treatment is an important prognostic factor of survival in non-small cell lung cancer: a meta-analysis and system review

Fig. 2

Funnel plot verifies publication bias of studies. It unveiled that most studies are at the top of the inverted funnel, while there are few studies at the base, and the left and right are roughly symmetrical, so the publication bias is not obvious. a Funnel plot of studies focusing on PFS,p = 0.221. b Funnel plot of studies focusing on OS, p = 0.659

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BMC Pulmonary Medicine

ISSN: 1471-2466

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