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. 2022 Oct 9;13(13):3452–3462. doi: 10.7150/jca.77768

Table 1.

Patient characteristics.

Non-secondary cancer (n=3602) Secondary cancer (n=329) P
Age (year) <0.001
median 59 53
IQR 52-65 43-63
Race 0.008
asian 1486 (41.3%) 106 (32.1%)
black 422 (11.7%) 39 (11.9%)
white 1614 (44.8%) 173 (52.6%)
other 80 (2.22%) 11 (3.34%)
Sex 0.164
female 1102 (30.6%) 88 (26.7%)
male 2500 (69.4%) 241 (73.3%)
Grade 0.174
I 56 (1.5%) 9 (2.8%)
II 280 (7.7%) 35 (10.6%)
III 1119 (31.1%) 101 (30.7%)
IV 1133 (31.5%) 96 (29.2%)
unknown 1014 (28.2%) 88 (26.7%)
Pathology 0.192
WHO I 1124 (31.2%) 121 (36.8%)
WHO II 881 (24.5%) 70 (21.3%)
WHO III 709 (19.7%) 59 (17.9%)
other 888 (24.6%) 79 (24.0%)
T stage 0.096
1 1148 (31.9%) 121 (36.8%)
2 927 (25.7%) 91 (27.7%)
3 739 (20.5%) 60 (18.2%)
4 788 (21.9%) 57 (17.3%)
N stage 0.042
0 867 (24.1%) 101 (30.7%)
1 1218 (33.8%) 109 (33.1%)
2 1078 (29.9%) 87 (26.4%)
3 439 (12.2%) 32 (9.8%)
AJCC 0.007
I 296 (8.3%) 42 (12.8%)
II 916 (25.4%) 95 (28.9%)
III 1230 (34.1%) 104 (31.6%)
IV 1160 (32.2%) 88 (26.7%)
Chemotherapy 0.897
no 445 (12.4%) 42 (12.8%)
yes 3157 (87.6%) 287 (87.2%)

IQR: interquartile range. WHO: World Health Organization. AJCC: American Joint Committee on Cancer.