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Table 3 Adverse events

From: Efficacy of programmed intermittent bolus epidural analgesia in thoracic surgery: a randomized controlled trial

  PIB (n = 21) CEI (n = 21) P-value
n (%) n (%)
Adverse effects
 Nausea, vomiting 8(38.1) 5(23.8) 0.32
 Urinary retention 2(9.5) 3(14.3) 0.63
 Feeling dizzy on standing up 4(19.0) 1(4.7) 0.15