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. 2018 Jan-Mar;12(1):103–111. doi: 10.4103/sja.SJA_382_17

Figure 6.

Figure 6

Funnel plot evaluating publication bias for postoperative morphine consumption (comparing PECS block to general anesthesia control). A positive publication bias is unlikely with X-intercept at −2.12 with P = 0.70 (2-tailed)