Table 4. Summary of the side effects of different genotype groups.

SNPs	Genotype	Patients (n)	Nausea (%)	Vomiting (%)	Respiratory depression (%)	Pruritus (%)
OPRM1 rs1799971	AA	115	4 (3.48%)	3 (2.61%)	2 (1.74%)	1 (0.87%)
	AG	78	2 (2.56%)	1 (1.28%)	1 (1.28%)	1 (1.28%)
	GG	32	1 (3.13%)	0 (0)	0 (0)	0 (0)
OPRM1 rs563649	AA	104	3 (2.88%)	3 (2.88%)	2 (1.92%)	2 (1.92%)
	AG	78	2 (2.56%)	1 (1.28%)	0 (0)	0 (0)
	GG	43	2 (4.56%)	0 (0)	1 (2.33%)	0 (0)
OPRM1 rs1323040	CC	124	5 (4.03%)	4 (3.23%)	3 (2.42%)	2 (1.61%)
	CT	79	3 (3.80%)	0 (0)	0 (0)	0 (0)
	TT	22	0 (0)	0 (0)	0 (0)	0 (0)
ABCB1 rs2032582	GG	109	4 (3.67%)	4 (3.67%)	2 (1.8%)	1 (0.92%)
	GT	85	3 (3.53%)	0 (0)	1 (1.18%)	0 (0)
	TT	31	0 (0)	0 (0)	0 (0)	1 (3.23%)
ABCB1 rs1045642	CC	120	4 (3.33%)	3 (2.50%)	3 (2.50%)	2 (1.67%)
	CT	58	2 (3.45%)	0 (0)	0 (0)	0 (0)
	TT	47	1 (2.13%)	1 (2.13%)	0 (0)	0 (0)
ABCB1 rs1128503	CC	131	5 (3.82%)	4 (3.05%)	2 (1.53%)	1 (0.76%)
	CT	63	2 (3.17%)	0 (0)	1 (1.59%)	1 (1.59%)
	TT	31	0 (0)	0 (0)	0 (0)	0 (0)