Efficacy of Platelet-Rich Plasma in Retarding Intervertebral Disc Degeneration: A Meta-Analysis of Animal Studies

Figure 3

Funnel plot for the publication bias of studies on the effects of platelet-rich plasma (PRP) treatment on disc height (a) and MRI T2 signal intensity (b). The three-line table (a and b) indicates the value for the Begg test and the Egger test, respectively.

(a)

(b)