Table 2. Association between body mass index and gastric cancer risk according to sex

BMI (kg/m2)	Total			Male			Female
	Person-years	No. of cases	HR (95% CI)*	Person-years	No. of cases	HR (95% CI)†	Person-years	No. of cases	HR (95% CI)†
2-year latency
<18.5	64,244	99	1.04 (0.85−1.28)	32,116	77	1.08 (0.85−1.36)	32,128	22	0.94 (0.60−1.45)
18.5−22.9	1,148,614	1,420	1.00 (0.93−1.08)	573,269	1,021	0.96 (0.88−1.05)	575,344	399	1.13 (0.97−1.32)
23.0−24.9	939,227	1,170	Ref	530,335	909	Ref	408,892	261	Ref
25.0−29.9	1,065,977	1,465	1.11 (1.03−1.20)‡	610,902	1,082	1.07 (0.98−1.17)	455,076	383	1.24 (1.06−1.45)‡
≥30.0	93,809	123	1.22 (1.01−1.47)‡	39,737	87	1.36 (1.12−1.74)‡	54,072	36	0.97 (0.69−1.38)
3-year latency
<18.5	64,206	84	1.06 (0.85−1.33)	32,090	67	1.13 (0.88−1.46)	32,116	17	0.86 (0.53−1.42)
18.5−22.9	1,148,125	1,219	1.01 (0.93−1.10)	572,917	876	0.97 (0.88−1.07)	575,208	343	1.14 (0.96−1.35)
23.0−24.9	938,826	1,004	Ref	530,026	781	Ref	408,800	223	Ref
25.0−29.9	1,065,447	1,247	1.10 (1.01−1.19)‡	610,487	912	1.05 (0.95−1.15)	455,961	335	1.27 (1.07−1.51)‡
≥30.0	93,767	105	1.21 (0.99−1.48)	39,714	77	1.43 (1.13−1.80)‡	54,053	28	0.89 (0.60−1.33)
4-year latency
<18.5	64,170	74	1.08 (0.85−1.37)	32,058	58	1.13 (0.87−1.49)	32,112	16	0.92 (0.55−1.54)
18.5−22.9	1,147,469	1,033	0.97 (0.89−1.06)	572,454	744	0.93 (0.84−1.04)	575,015	289	1.08 (0.90−1.30)
23.0−24.9	938,421	889	Ref	529,710	691	Ref	408,711	198	Ref
25.0−29.9	1,064,868	1,083	1.08 (0.98−1.18)	610,040	785	1.02 (0.92−1.13)	454,828	298	1.27 (1.06−1.52)‡
≥30.0	93,728	94	1.22 (0.98−1.51)	39,691	70	1.46 (1.14−1.87)‡	54,038	24	0.86 (0.56−1.32)

BMI, body mass index; HR, hazard ratio.
Adjusted for age, sex, smoking status, alcohol consumption frequency per week, history of diabetes mellitus, hypertension, and dyslipidemia with consideration of a 2-year latency period.
Adjusted for age, smoking status, alcohol consumption frequency per week, history of diabetes mellitus, hypertension, and dyslipidemia with consideration of a 2-year latency period.
Indicates statistical significance.