Table 3.

Occurrence of side effects in the study groups

Group	Nausea	Vomiting	Drowsiness	Pruritus	Dizziness	Respiratory depression	Hypotension
Buprenorphine	20 (54%)	4 (10.8%)	6 (16.2%)	0 (0%)	23 (62.1%)*	10 (27%)	17 (45.9%)
Morphine	20 (62.5%)	3 (9.3%)	6 (18.7%)	1 (3.1%)	12 (37.5%)	11 (34.3%)	15 (46.8%)
P value†	0.47	1.000	0.782	0.464	0.041	0.508	0.938

*Statistically significant (P <0.05).

^†χ² test, Fisher’s exact test.