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Table 2 Proportion of males vs. females receiving suboptimal prophylaxis

From: Risk of postoperative nausea and vomiting in hip and knee arthroplasty: a prospective cohort study after spinal anaesthesia including intrathecal morphine

  Men Female p-value
(n = 57) (n = 42)  
Suboptimal prophylaxis (n = 27) 8 (14%) 19 (45%)  
Optimal prophylaxis (n = 72) 49 (86%) 23 (55%) p < 0.001
  1. p-value for comparisons between gender and suboptimal or optimal prophylaxis with Pearson’s chi-squared test