Fig. 3From: The effect of transversus abdominis plane block on the chronic pain after colorectal surgery: a retrospective cohort studyPrevalence of CPSP. Legend: The prevalence of CPSP at 3 months and 6 months after surgery. Data is presented as percentage. The prevalence of CPSP in group TP showed no significant difference compared with group P at 3 months and 6 months after surgery (all P > 0.05). CPSP = chronic postsurgical pain. Group P=PCIA only, Group TP = PCIA and TAP blockBack to article page