Factors influencing postoperative complications in patients with gastric cancer: A retrospective study

Table 1 Baseline characteristics of the study population (n = 500), mean ± SD/n (%)

Characteristic	Value
Age (years)	63.7 ± 11.2
Male sex	312 (62.4)
BMI (kg/m²)	23.8 ± 3.6
ASA score
I	98 (19.6)
II	276 (55.2)
III	118 (23.6)
IV	8 (1.6)
Comorbidities
Hypertension	187 (37.4)
Diabetes	95 (19.0)
Cardiovascular disease	73 (14.6)
COPD	41 (8.2)
Smoking history	156 (31.2)
Preoperative laboratory values
Hemoglobin (g/dL)	12.3 ± 1.8
Albumin (g/dL)	3.8 ± 0.5
CRP (mg/L), median (IQR)	5.2 (2.1-12.7)
Tumor location
Upper third	112 (22.4)
Middle third	178 (35.6)
Lower third	210 (42.0)
Clinical TNM stage
I	156 (31.2)
II	178 (35.6)
III	166 (33.2)
Lauren classification
Intestinal	247 (49.4)
Diffuse	193 (38.6)
Mixed	60 (12.0)
Neoadjuvant therapy	87 (17.4)

BMI: Body mass index; ASA: American Society of Anesthesiologists; COPD: Chronic obstructive pulmonary disease; CRP: C-reactive protein; IQR: Interquartile range; TNM: Tumor node metastasis.