Table 7. Comparison of the incidence of adverse reactions between the 2 groups [n (%)].

Group	Respiratorydepression	Nauseaandvomiting	Hypotension	Bradycardia	Uroschesis	Total complications
Observation group (n=58)	0 (0.00)	2 (3.45)	1 (1.72)	1 (1.72)	1 (1.72)	5 (8.62)
Control group (n=57)	2 (3.51)	4 (7.02)	3 (5.26)	2 (3.51)	3 (5.269)	14 (24.56)
χ2						6.166
P						0.013

P value, probability; χ²-test, Chi-square test.