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Fig. 1 | BMC Anesthesiology

Fig. 1

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

Fig. 1

Cumulative risk of PONV and risk of nausea (including frequency), vomiting, and PONV during the different observation periods. Bars represent risk for nausea, and grey parts of the bars represent nausea that affected the patient’s activity (getting out of bed, moving in bed, walking normally, and eating or drinking) and was graded as sometimes (light grey) and often/constant (dark grey). The dashed line shows the cumulative incidence of PONV and accounts for the total number of patients with any event of nausea or vomiting

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