Table 3.

Comparison of average telomere length among different subgroups in GC cases or controls

Subgroup	Cases			Controls
	n	Mean (SD)	P‐value*	n	Mean (SD)	P‐value*
Sex
Male	258	0.87 (0.15)	0.	237	1.01 (0.22)
Female	138	0.93 (0.21)	0.003	141	1.14 (0.27)	<0.001
Age (years)
<53	194	0.93 (0.20)		188	1.13 (0.26)
≥53	202	0.85 (0.17)	<0.001	190	0.99 (0.23)	<0.001
Smoking status
Never	182	0.90 (0.20)		246	1.05 (0.22)
Ever	214	0.88 (0.18)	0.298	132	1.08 (0.27)	0.270
Alcohol drinking
Never	222	0.87 (0.16)		268	1.04 (0.19)
Ever	174	0.92 (0.21)	0.010	110	1.11 (0.28)	0.016
HP infection
Yes	269	0.88 (0.18)		197	1.07 (0.20)
No	127	0.91 (0.22)	0.180	181	1.05 (0.26)	0.410

^* P‐values were determined by Student's t‐test to assess the difference of average telomere length between two different subgroups in cases or controls.

HP, Helicobacter pylori.