Correlation of serum cytokine-induced neutrophil chemoattractant levels with Helicobacter pylori infection and disease severity in gastric cancer patients

Table 1 Demographic and clinical characteristics of study population, n (%)

Characteristic	H. pylori positive (n = 138)	H. pylori negative (n = 120)	P value
Age (years)	60.1 ± 11.5	57.8 ± 10.9	0.423
Gender			0.035
Male	38 (27.5)	22 (18.3)
Female	100 (72.5)	98 (81.7)
TNM stage			0.007
Stage I	6 (4.3)	4 (3.3)
Stage II	22 (15.9)	8 (6.7)
Stage III	30 (21.7)	10 (8.3)
Stage IV	80 (57.9)	98 (81.7)
Smoking history			0.021
Never smoked	28 (20.3)	12 (10)
Former smoker	22 (15.9)	8 (6.7)
Current smoker	88 (63.8)	100 (83.3)
Alcohol consumption			0.034
Never drank	42 (30.4)	18 (15)
Former drinker	14 (10.1)	6 (5)
Current drinker	82 (59.4)	96 (80)
BMI (kg/m²)	25.3 ± 4.1	24.9 ± 3.2	0.567
Family history of cancer			0.008
Yes	16 (11.6)	4 (3.3)
No	122 (88.4)	116 (96.7)
Previous gastric surgery			0.009
Yes	8 (5.8)	2 (1.7)
No	130 (94.2)	118 (98.3)

BMI: Body mass index; H. pylori: Helicobacter pylori.