From: A comparison of ondansetron and lidocaine in reducing injection pain of propofol: a randomized controlled study
Pain severity, n (%)
Group O (n = 80)
Group L (n = 80)
Group C (n = 80)
No pain
14 (17.5)
27 (33.8)
12 (15.0)
Mild
25 (31.2)
30 (37.5)
18 (22.5)
Moderate
17 (21.2)
32 (40.0)
Severe
16 (20.0)
6 (7.5)