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. 2016 May 10;11(5):e0155114. doi: 10.1371/journal.pone.0155114

Fig 2. Pain severity at 3 month following cesarean delivery as assessed by the Numerical Rating Scale.

Fig 2

The prevalence of persistent pain was evaluated by sending patients a questionnaire 3 months after cesarean section. *Indicates significantly lower NRS among patients with intrathecal administration of morphine by Wilcoxon rank sum tests (p<0.05).