. 2020 Jul 10;8:e9390. doi: 10.7717/peerj.9390

Table 4. Association of study variables with body weight change three months after gastrectomy in univariate analysis.

Variables	β	SE	95%CI		Wald χ²	P
			lower	upper
Age
<65 y	1.4%	1.4%	–1.3%	4.2%	1.071	0.301
≥65 y	—
Gender
Female	<0.1%	1.1%	–2.2%	2.3%	0.001	0.977
Male	—
Marriage status
Single, or devoiced or widowed	–1.7%	2.5%	–6.5%	3.1%	0.472	0.492
Married	—
Education level					2.275	0.321
Middle or below	1.9%	12.8%	–0.6%	4.4%	2.197	0.138
High	1.4%	1.5%	–1.5%	4.3%	0.847	0.358
College or above	—
Religion
Buddhism	2.0%	1.6%	–1.0%	5.0%	1.645	0.200
No religion	—
Cancer stage					1.514	0.469
IV	3.3%	3.1%	–2.7%	9.4%	1.158	0.282
III	2.2%	3.0%	–3.6%	8.1%	0.550	0.458
II	—
Type of operation
Total	3.1%	1.1%	1.0%	5.2%	8.551	0.003
Distal	—
Treatment type					0.585	0.747
Surgery	0.4%	0.7%	–0.8%	1.7%	0.442	0.506
Surgery + Chemotherapy	–0.1%	1.7%	–3.4%	3.1%	0.008	0.929
Neoadjuvant chemotherapy + Surgery	—
ONS
With	0.9%	1.1%	–1.3%	3.2%	0.667	0.414
Without	—
Preoperative BMI					8.993	0.029
Obesity	3.9%	2.2%	–0.5%	8.2%	3.063	0.080
Overweight	0.8%	2.5%	–4.1%	–5.7%	0.092	0.761
Normal weight	1.6%	2.3%	–3.0%	–6.1%	0.456	0.499
Underweight	—
Complication
With	3.0%	1.1%	0.7%	5.2%	6.700	0.010
Without	—
CCI	0.2%	0.2%	–0.2%	0.6%	0.878	0.349
Knowledge	0.1%	0.1%	–0.2%	0.3%	0.260	0.610
Attitude	0.3%	0.2%	–0.1%	0.6%	2.012	0.156
Practice	0.3%	0.2%	<0.1%	0.6%	3.288	0.070

Notes.