Analysis of prognostic factors and outcomes of gastric cancer in younger patients: A case control study using propensity score methods

Table 1 Clinicopathological features of the patients

Clinicopathological feature	Younger patients (n = 112)	Older patients (n = 112)	P-value
Gender			0.007
Male	49	70
Female	63	42
BMI (mean ± SD, kg/m2)	22.4 ± 3.4	23.1 ± 2.7	0.086
Comorbidity			< 0.001
No	100	74
Yes	12	38
Size of main lesion (mean ± SD, mm)	4.1 ± 3.1	3.9 ± 3.3	0.604
Histologic type			< 0.001
Well differentiated	7	29
Moderate differentiated	19	34
Poorly differentiated	70	41
Signet ring cell	14	5
Other	2	3
Lauren classification			< 0.001
Intestinal	18	58
Diffuse	72	34
Mixed	22	20
Tumor location			0.154
Upper	15	15
Middle	40	25
Lower	55	70
Whole	2	2
T stage1			0.045
EGC	50	66
AGC	62	46
N stage1			0.132
N0	67	72
N1	12	16
N2	11	14
N3	22	10
Stage1			0.036
I	57	75
II	21	11
III	34	26

¹Based on the 7^th edition of the American Joint Committee on Cancer classification.