Postoperative body weight change and its influencing factors in patients with gastric cancer

Table 3 Univariate analysis of influencing factors of dynamic changes in body weight in patients with gastric cancer within 6 mo after gastrectomy

Variable	β	SE	95%CI		Wald χ2	P value
			Lower	Upper
Age
≥ 65 years	-1.781	1.771	-5.252	1.691	1.011	0.315
< 65 years	-
Gender
Male	13.225	1.334	10.610	15.840	98.260	< 0.001b
Female	-
Occupation					7.748	0.052
Farmer	-4.684	2.532	-9.647	0.280	3.421	0.064
Worker	0.449	2.824	-5.086	5.985	0.025	0.874
Retired	-0.504	2.833	-6.058	5.049	0.032	0.859
Others	-
Residence					4.663	0.097
City	3.932	2.115	-0.213	8.077	3.457	0.063
Town	3.546	2.142	-0.652	7.743	2.741	0.098
Country	-
Education level					1.888	0.596
College or above	3.164	2.818	-2.359	8.687	1.261	0.262
High school	2.479	2.792	-2.994	7.952	0.788	0.375
Middle school	1.797	2.118	-2.355	5.949	0.720	0.396
Primary school	-
Religion
Yes	-8.611	3.148	-14.781	-2.441	7.482	0.006b
No	-
Marriage status
Single or divorced or widowed	-11.109	2.451	-15.912	-6.306	20.549	< 0.001b
Married	-
Living condition
Live with relatives	-1.543	3.945	-9.275	6.189	0.153	0.696
Solitude	-
Monthly household income (RMB)					2.758	0.599
≥ ¥10000	1.083	4.743	-8.214	10.380	0.052	0.819
¥5000-¥10000	-3.732	3.863	-11.303	3.838	0.934	0.334
¥3000-¥5000	-0.866	3.736	-8.188	6.456	0.054	0.817
¥1000-¥3000	-1.321	3.875	-8.915	6.274	0.116	0.733
< ¥1000	-
Payment method for medical expenses
Medical insurance	3.934	1.719	0.565	7.303	5.237	0.022a
Rural and urban health insurance	-
Concomitant chronic diseases					3.391	0.183
2 or more	3.433	2.739	-1.935	8.802	1.571	0.210
1	3.187	1.989	-0.711	7.085	2.567	0.109
None	-
TNM stage					3.234	0.198
III	-1.864	1.980	-5.744	2.017	0.886	0.347
II	2.471	2.337	-2.110	7.052	1.118	0.290
I	-
Operation mode
Open surgery	2.018	1.856	-1.620	5.656	1.182	0.277
Laparoscopy	-
Gastrectomy type
Partial gastrectomy	2.141	1.789	-1.366	5.649	1.432	0.231
Total gastrectomy	-
Postoperative complications
Yes	-1.535	2.346	-6.132	3.063	0.428	0.513
No	-
Perioperative chemotherapy
Yes	0.777	1.890	-2.927	4.481	0.169	0.681
No	-
Preoperative chemotherapy
Yes	2.842	2.303	-1.672	7.356	1.523	0.217
No	-
Preoperative BMI (kg/m2)					168.996	< 0.001b
≥ 25.00 kg/m2	25.416	2.187	21.130	29.702	135.101	< 0.001b
23.00-24.99 kg/m2	19.058	2.038	15.063	23.054	87.417	< 0.001b
18.50-22.99 kg/m2	10.892	1.912	7.145	14.639	32.462	< 0.001b
< 18.50 kg/m2	-
Significant psychological distress
Yes	-1.050	0.405	-1.844	-0.256	6.715	0.010a
No	-

^aP < 0.05.

^bP < 0.01.

TNM: Tumor-node-metastasis; BMI: Body mass index; β: Partial regression coefficient; SE: Standard error; CI: Confidence interval.