Table 5.

Incidence of Adverse Events

	Group A	Group B	Group C	χ2	P
	(n=73)	(n=76)	(n=51)
Respiratory depression	0(0.0%)	1(1.3%)	2(3.9%)	2.71	0.261
Hypotension	28(38.4%)	33(43.4%)	15(29.4%)	2.55	0.280
Bradycardia	0(0.0%)	2(2.6%)	0(0.0%)	2.19	0.339
Nausea and vomiting	0(0.0%)	0(0.0%)	0(0.0%)	–	–
Dizziness	4(5.5%)	3(3.9%)	3(5.9%)	0.45	0.847
Muscle spasms	1(1.4%)	1(1.3%)	0(0.0%)	0.86	1.000

Note: Data are presented as number (%).