Analgesic efficacy of thoracic paravertebral block in elderly gastric cancer patients and its impact on homeostasis

Table 1 Patient clinical characteristics

Factors	Age (year)	Sex		BMI	ASA classification		Clinical stage		Surgical approach
		Male	Female		Class I	Class II	Stage I	Stage II	Total gastrectomy	Distal gastrectomy
Control group (n = 107)	66.64 ± 1.40	57	50	23.10 ± 1.71	66	41	71	36	55	52
Combination group (n = 120)	66.70 ± 1.22	51	69	22.78 ± 1.58	78	42	89	31	64	52
χ2/t	0.426	2.631		1.442	0.268		1.659		0.318
P value	0.670	0.105		0.1506	0.604		0.198		0.573

BMI: Body mass index.

Table 2 Comparison of complications between the two groups, n (%)

	Control group (n = 107)	Combination group (n = 120)	χ2	P value
Postoperative nausea and vomiting	18 (16.8)	6 (5.0)	8.317	0.004
Pruritus	8 (7.5)	4 (3.3)	-	0.1441
Respiratory depression	3 (2.8)	1 (0.8)	-	0.3431
Urinary retention	10 (9.3)	7 (5.8)	1.025	0.311
Overall complications	33 (30.8)	17 (14.2)	9.333	0.002

¹Because of expected frequencies < 5, Fisher’s exact test was used to calculate the P value.

Table 3 Multiple linear regression analysis of factors influencing the visual analog scale score 24 hours postoperatively

Factors	β	SD	Standardized coefficient β	t value	P value	95% confidence interval	Tolerance
Constant	2.695	0.094	-	28.698	< 0.001	2.510	2.880	2.695
Intervention methods	-1.567	0.036	-0.966	-43.089	< 0.001	-1.639	-1.495	-1.567
Postoperative IL-6	-0.001	0.001	-0.013	-0.781	0.435	-0.003	0.001	-0.001
Postoperative lactic acid	0.003	0.030	0.002	0.099	0.921	-0.056	0.062	0.003

IL-6: Interleukin-6.