Table 1 Open in new tab Baseline...

Variables	N	%
Age (Interquartile Range)	42.41 (39–47)
Sex
Female	3301	46.8%
Male	3757	53.2%
Race
White	5273	74.7%
Black	860	12.2%
Other	925	13.1%
Site
Right	1559	22.1%
Left	5090	72.1%
Trans	409	5.8%
Grade
I	501	7.1%
II	5333	75.6%
III/IV	1224	17.3%
Histology
Adenocarcinoma	6528	92.5%
Mucinous	451	6.4%
Signet ring	79	1.1%
T stage
T1	748	10.6%
T2	993	14.1%
T3	4302	61.0%
T4	1015	14.4%
N stage
N0	3436	48.7%
N1	2317	32.8%
N2	1305	18.5%
Lymph node ratio (Interquartile Range)	0.097 (0–0.119)
CEA
NO	4787	67.8%
Yes	2271	32.2%
Perineural invasion
NO	6102	86.5%
Yes	956	13.5%
Total	7058	100%

Variables	N	%
Age (Interquartile Range)	42.41 (39–47)
Sex
Female	3301	46.8%
Male	3757	53.2%
Race
White	5273	74.7%
Black	860	12.2%
Other	925	13.1%
Site
Right	1559	22.1%
Left	5090	72.1%
Trans	409	5.8%
Grade
I	501	7.1%
II	5333	75.6%
III/IV	1224	17.3%
Histology
Adenocarcinoma	6528	92.5%
Mucinous	451	6.4%
Signet ring	79	1.1%
T stage
T1	748	10.6%
T2	993	14.1%
T3	4302	61.0%
T4	1015	14.4%
N stage
N0	3436	48.7%
N1	2317	32.8%
N2	1305	18.5%
Lymph node ratio (Interquartile Range)	0.097 (0–0.119)
CEA
NO	4787	67.8%
Yes	2271	32.2%
Perineural invasion
NO	6102	86.5%
Yes	956	13.5%
Total	7058	100%

Table 1

Baseline features of early onset patients in SEER database

Variables	N	%
Age (Interquartile Range)	42.41 (39–47)
Sex
Female	3301	46.8%
Male	3757	53.2%
Race
White	5273	74.7%
Black	860	12.2%
Other	925	13.1%
Site
Right	1559	22.1%
Left	5090	72.1%
Trans	409	5.8%
Grade
I	501	7.1%
II	5333	75.6%
III/IV	1224	17.3%
Histology
Adenocarcinoma	6528	92.5%
Mucinous	451	6.4%
Signet ring	79	1.1%
T stage
T1	748	10.6%
T2	993	14.1%
T3	4302	61.0%
T4	1015	14.4%
N stage
N0	3436	48.7%
N1	2317	32.8%
N2	1305	18.5%
Lymph node ratio (Interquartile Range)	0.097 (0–0.119)
CEA
NO	4787	67.8%
Yes	2271	32.2%
Perineural invasion
NO	6102	86.5%
Yes	956	13.5%
Total	7058	100%

Variables	N	%
Age (Interquartile Range)	42.41 (39–47)
Sex
Female	3301	46.8%
Male	3757	53.2%
Race
White	5273	74.7%
Black	860	12.2%
Other	925	13.1%
Site
Right	1559	22.1%
Left	5090	72.1%
Trans	409	5.8%
Grade
I	501	7.1%
II	5333	75.6%
III/IV	1224	17.3%
Histology
Adenocarcinoma	6528	92.5%
Mucinous	451	6.4%
Signet ring	79	1.1%
T stage
T1	748	10.6%
T2	993	14.1%
T3	4302	61.0%
T4	1015	14.4%
N stage
N0	3436	48.7%
N1	2317	32.8%
N2	1305	18.5%
Lymph node ratio (Interquartile Range)	0.097 (0–0.119)
CEA
NO	4787	67.8%
Yes	2271	32.2%
Perineural invasion
NO	6102	86.5%
Yes	956	13.5%
Total	7058	100%