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(A) Pooled prevalence (95% CI) of NIFTP cases among those 1208 nodules with a preoperative FNAC report of Bethesda V. The results show that NIFTP represents 14% (95% CI from 6 to 26) of all cases. I2 (inconsistency) was 95.8% (95% CI = 94.2–96.8%). (B) As shown in funnel plot, a publication bias might be considered. Egger test: P = 0.004.
