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Figure 1 | Journal of Experimental & Clinical Cancer Research

Figure 1

From: Efficacy and adverse effects of transdermal fentanyl and sustained-release oral morphine in treating moderate-severe cancer pain in Chinese population: a systematic review and meta-analysis

Figure 1

Funnel plot of test for publication bias. The vertical line represents the meta-analysis summary estimate, and the scatter represents single study. In the absence of publication bias, studies will be distributed symmetrically right and left the vertical line. logRR, natural logarithm of the RR; SE(logRR), standard error of the logRR.

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