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Table 2 Cumulative incidence of retching/vomiting, nausea and PONV

From: Children's vomiting following posterior fossa surgery: A retrospective study

  Hours from anaesthetic finish time
Total number of children with least one event recorded (Cumulative Percent)
  0–4 0–8 0–24 0–48 0–72 0–96 0–120 0–144 0–168 0–192 0–216*
Retching/Vomiting 59
(23.7%)
75
(30.1%)
119
(47.8%)
153
(61.4%)
164
(65.9%)
174
(69.9%)
181
(72.7%)
186
(74.7%)
187
(75.1%)
190
(76.3%)
191
(76.7%)
Nausea ** 24
(9.6%)
32
(12.9%)
59
(23.7%)
84
(33.7%)
93
(37.3%)
98
(39.5%)
103
(41.4%)
105
(42.2%)
105
(42.2%)
106
(42.6%)
107
(43.0%)
PONV 69
(27.7%)
81
(32.5%)
134
(53.8%)
162
(65.1%)
172
(69.1%)
182
(73.1%)
189
(75.9%)
190
(76.3%)
191
(76.7)
194
(77.9%)
195
(78.3%)
  1. PONV: First recorded nausea, retching or vomiting.
  2. *No new recorded events after 216 hours.
  3. **The differences between the incidence of nausea and retching/vomiting indicate that nausea is underestimated.