Retrospective Study
Copyright ©The Author(s) 2024.
World J Gastroenterol. Jul 28, 2024; 30(28): 3403-3417
Published online Jul 28, 2024. doi: 10.3748/wjg.v30.i28.3403
Table 2 Characteristics of patients with rectal neuroendocrine neoplasms from training database and validation set (2010-2022), n (%)

All
Training set
Validation set
P value
n = 1183
n = 819
n = 364
Sex0.402
    Female504 (42.6)356 (43.5)148 (40.7)
    Male679 (57.4)463 (56.5)216 (59.3)
Age, year51.7 (12.0)51.5 (12.0)52.3 (12.0)0.291
Size, year1.1 (1.0)1.1 (1.0)1.2 (1.2)0.187
Size (cm)0.300
    ≤ 1819 (69.2)568 (69.4)251 (69.0)
    1-2246 (20.8)176 (21.5)70 (19.2)
    > 2118 (10.0)75 (9.2)43 (11.8)
PLR126.1 (52.3)126.6 (54.3)124.9 (47.6)0.588
NLR2.3 (5.1)2.2 (2.5)2.5 (8.4)0.559
PNI54.1 (6.8)54.2 (6.9)53.9 (6.5)0.455
Pathological type0.824
    NET1134 (95.9)786 (96.0)348 (95.6)
    NEC44 (3.7)29 (3.5)15 (4.1)
    MANEC5 (0.4)4 (0.5)1 (0.3)
Pathological grade0.876
    G11020 (86.2)705 (86.1)315 (86.5)
    G2114 (9.6)81 (9.9)33 (9.1)
    G349 (4.1)33 (4.0)16 (4.4)
T stage0.358
    T11010 (85.4)707 (86.3)303 (83.2)
    T2111 (9.4)74 (9.0)37 (10.2)
    T345 (3.8)29 (3.5)16 (4.4)
    T417 (1.4)9 (1.1)8 (2.2)
Lymphatic metastasis0.290
    No1107 (93.6)771 (94.1)336 (92.3)
    Yes76 (6.4)48 (5.9)28 (7.7)
TNM stage0.227
    I996 (84.2)699 (85.3)297 (81.6)
    II108 (9.1)71 (8.7)37 (10.2)
    III79 (6.7)49 (6.0)30 (8.2)
Lymph vascular invasion0.252
    No1149 (97.1)799 (97.6)350 (96.2)
    Yes34 (2.9)20 (2.4)14 (3.8)
CgA0.100
    Negative871 (73.6)615 (75.1)256 (70.3)
    Positive312 (26.4)204 (24.9)108 (29.7)
Syn0.393
    Negative297 (25.1)212 (25.9)85 (23.4)
    Positive886 (74.9)607 (74.1)279 (76.6)
Adjuvant therapy0.286
    No1125 (95.1)783 (95.6)342 (94.0)
    Yes58 (4.9)36 (4.4)22 (6.0)