From: Risk factors for postoperative nausea and vomiting after the removal of impacted third molars: a cross-sectional study
Score
Group
PONV (+) (n = 23)
PONV (−) (n = 159)
0–1
Low
13 (16.7%)
55 (83.3)
2
Mild
10 (9.6%)
104 (90.4)
3–4
High
0 (0%)