Basic Study
Copyright ©The Author(s) 2018.
World J Gastroenterol. Nov 7, 2018; 24(41): 4679-4690
Published online Nov 7, 2018. doi: 10.3748/wjg.v24.i41.4679
Table 1 Clinicopathological characteristics of patients with different G protein-coupled receptor 31 expression levels in colorectal cancer n (%)
VariableGPR31 expression
Training cohort
Validation cohort
CasesLowHighP valueCasesLowHighP value
Age (yr)32157.7 ± 14.359.6 ± 13.70.22314561.6 ± 13.464.0 ± 13.10.324
Gender0.6740.921
Female14889 (60.1)59 (39.9)5339 (73.6)14 (26.4)
Male173108 (62.4)65 (37.6)9267 (72.8)25 (27.2)
BMI (kg/m2)31521.1 ± 4.021.5 ± 3.10.3507121.8 ± 3.122.8 ± 2.20.192
Preoperative ileus0.0510.402
Yes2520 (80.0)5 (20.0)3326 (78.8)7 (21.2)
No294177 (60.2)117 (39.8)11280 (71.4)32 (28.6)
CEA (ng/mL)0.9490.954
< 5200125 (62.5)75 (37.5)9066 (73.3)24 (26.7)
≥ 59761 (62.9)36 (37.1)4231 (73.8)11 (26.2)
CA199 (ng/mL)0.3990.534
< 37218142 (65.1)76 (34.9)10577 (73.3)28 (26.7)
≥ 376438 (59.4)26 (40.6)2114 (66.7)7 (33.3)
Tumor location0.7640.404
Colon15693 (59.6)63 (40.4)6449 (76.6)15 (23.4)
Rectal163103 (63.2)60 (36.8)8157 (70.4)24 (29.6)
Size (cm)3205.1 ± 2.24.9 ± 2.00.3801434.8 ± 2.04.5 ± 1.70.446
Histopathology0.5510.406
Adenocarcinoma283172 (60.8)111 (39.2)12895 (74.2)33 (25.8)
Others3825 (65.8)13 (34.2)1711 (64.7)6 (35.3)
Differentiation0.4640.305
Well/moderate271164 (60.5)107 (39.5)11284 (75.0)28 (25.0)
Poor5033 (66.0)17 (34.0)2919 (65.5)10 (34.5)
pT classification0.5920.006a
T1/T26035 (58.3)25 (41.7)3935 (89.7)4 (10.3)
T3/T4261162 (62.1)99 (37.9)10671 (67.0)35 (33.0)
pN classification0.6430.767
N0194117 (60.3)77 (39.7)8160 (74.1)21 (25.9)
N112478 (62.9)46 (37.1)6446 (71.9)18 (28.1)
pM classification0.007a0.018a
M0298189 (63.4)109 (36.6)12797 (76.4)30 (23.6)
M1238 (34.8)15 (65.2)189 (50.0)9 (50.0)
TNM stage0.8850.360
 I/II188116 (61.7)72 (38.3)7658 (76.3)18 (23.7)
III/IV13381 (60.9)52 (39.1)6948 (69.6)21 (30.4)