Effect of hyperthermia combined with opioids on cancer pain control and surgical stress in patients with gastrointestinal cancer

Table 3 Comparison of immune function indicators between the two groups of patients before and after pain relief treatment

Immune function indicators	Stage	Group S (n = 35)	Group L (n = 35)	t	P value
CD4+ (%)	Before analgesic treatment	29.67 ± 5.91	29.45 ± 5.72	0.158	0.875
	After analgesic treatment	26.05 ± 4.76a	29.18 ± 5.64	2.509	0.014
CD8+ (%)	Before analgesic treatment	25.16 ± 4.25	25.37 ± 4.48	0.201	0.841
	After analgesic treatment	29.23 ± 3.89a	26.28 ± 3.75	3.230	0.002
CD4+/CD8+	Before analgesic treatment	1.06 ± 0.23	1.04 ± 0.21	0.378	0.705
	After analgesic treatment	0.83 ± 0.17a	0.97 ± 0.12	3.980	< 0.001

^aP < 0.05 vs before treatment within the group.