Retrospective Cohort Study
Copyright ©The Author(s) 2024.
World J Gastroenterol. Sep 7, 2024; 30(33): 3823-3836
Published online Sep 7, 2024. doi: 10.3748/wjg.v30.i33.3823
Table 1 Baseline characteristics in left-sided colon cancer
Variables
Patients
P value
All (n = 801)
PIV-high (n = 282)
PIV-low (n = 519)
Sex, n (%)0.044
    Female495 (62)188 (67)307 (59)
    Male306 (38)94 (33)212 (41)
Age, median (IQR), years63 (54, 70)62.5 (54, 70.75)63 (54, 69)0.743
Tumor grade, n (%)0.010
    G1-2743 (93)252 (89)491 (95)
    G358 (7)30 (11)28 (5)
Vascular, n (%)0.961
    Invasion184 (23)64 (23)120 (23)
    No-invasion617 (77)218 (77)399 (77)
Perineural, n (%)0.727
    Invasion116 (14)43 (15)73 (14)
    No-invasion685 (86)239 (85)446 (86)
MMR, n (%)< 0.001
    dMMR85 (11)48 (17)37 (7)
    pMMR716 (89)234 (83)482 (93)
T stage, n (%)0.001
    T1-2143 (18)33 (12)110 (21)
    T3-4658 (82)249 (88)409 (79)
N stage, n (%)0.192
    N0446 (56)152 (54)294 (57)
    N1261 (33)89 (32)172 (33)
    N294 (12)41 (15)53 (10)
NLR, median (IQR)2.13 (1.62, 2.92)3.06 (2.39, 4.15)1.8 (1.44, 2.23)< 0.001
PLR, median (IQR)141.67 (111.31, 183.98)182.76 (143.89, 238.09)127.47 (100, 155.05)< 0.001
SII, median (IQR)502.24 (357.54, 742.37)856.81 (650, 1299.84)402.6 (307.71, 508.28)< 0.001
PIV, median (IQR)175.87 (111.92, 286.84)361.93 (271.07, 644.13)133.11 (91.46, 172.42)< 0.001
CEA, median (IQR), ng/mL3.5 (2, 7.58)4.4 (2.3, 10.52)3.2 (1.88, 6.73)< 0.001
CA19-9, median (IQR), U/mL11.6 (7, 20.1)11.95 (6.73, 21.8)11.5 (7.2, 19.6)0.772
Tumor size, median (IQR), cm4 (3, 5)5 (3.78, 6)4 (3, 5)< 0.001
Table 2 Cox proportional hazards regression models for disease-free survival in left-sided colon cancer and right-sided colon cancer
VariablesLCC (n = 801)
RCC (n = 709)
aHR (95%CI)1
P value1
aHR (95%CI)2
P value2
aHR (95%CI)1
P value1
aHR (95%CI)2
P value2
Sex
    Female1 (Reference)NA1 (Reference)NA
    Male1.17 (0.82-1.65)0.3871.13 (0.76-1.68)0.541
Age, years
    < 651 (Reference)NA1 (Reference)NA
    ≥ 651.31 (0.93-1.85)0.1241.44 (0.96-2.15)0.074
Tumor grade
    G1-21 (Reference)NA1 (Reference)NA
    G31.63 (0.92-2.90)0.0940.88 (0.49-1.58)0.676
AJCC stage
    I1 (Reference)NA1 (Reference)NA1 (Reference)NA1 (Reference)NA
    II2.12 (0.89-5.06)0.0891.55 (0.65-3.75)0.3251.58 (0.56-4.50)0.3901.31 (0.46-3.74)0.619
    III5.76 (2.52-13.15)< 0.0013.70 (1.59-8.62)0.0025.10 (1.86-14.00)0.0023.15 (1.13-8.83)0.029
Tumor size
    < 5 cm1 (Reference)NA1 (Reference)NA1 (Reference)NA
    ≥ 5 cm1.61 (1.14-2.27)0.0071.24 (0.86-1.80)0.2530.88 (0.59-1.31)0.521
Vascular
    No-invasion1 (Reference)NA1 (Reference)NA1 (Reference)NA1 (Reference)NA
    Invasion2.17 (1.52-3.10)< 0.0011.48 (1.00-2.19)0.0493.01 (2.02-4.47)< 0.0012.02 (1.32-3.11)0.001
Perineural
    No-invasion1 (Reference)NA1 (Reference)NA1 (Reference)NA1 (Reference)NA
    Invasion2.22 (1.49-3.32)< 0.0011.58 (1.02-2.45)0.0402.24 (1.39-3.60)< 0.0011.06 (0.63-1.77)0.831
MMR
    pMMR1 (Reference)NA1 (Reference)NA1 (Reference)NA
    dMMR0.74 (0.40-1.37)0.3390.45 (0.25-0.78)0.0050.56 (0.32-1.00)0.049
CEA
    Low1 (Reference)NA1 (Reference)NA1 (Reference)NA1 (Reference)NA
    High2.80 (1.93-4.06)< 0.0011.81 (1.22-2.70)0.0032.51 (1.69-3.73)< 0.0011.83 (1.20-2.79)0.005
CA19-9
    Low1 (Reference)NA1 (Reference)NA1 (Reference)NA1 (Reference)NA
    High2.02 (1.31-3.13)0.0021.34 (0.85-2.11)0.2012.65 (1.69-4.15)< 0.0011.75 (1.09-2.81)0.020
PIV
    Low1 (Reference)NA1 (Reference)NA1 (Reference)NA
    High2.39 (1.70-3.38)< 0.0012.12 (1.30-3.47)0.0030.72 (0.48-1.08)0.114
SII
    Low1 (Reference)NA1 (Reference)NA1 (Reference)NA
    High1.89 (1.31-2.72)< 0.0010.92 (0.53-1.62)0.7820.68 (0.44-1.04)0.076
NLR
    Low1 (Reference)NA1 (Reference)NA1 (Reference)NA
    High1.72 (1.20-2.47)0.0031.18 (0.74-1.90)0.4871.37 (0.77-2.46)0.288
PLR
    Low1 (Reference)NA1 (Reference)NA1 (Reference)NA
    High1.73 (1.14-2.61)0.0090.87 (0.54-1.38)0.5451.58 (0.94-2.66)0.088
Table 3 Logistic multivariable analysis for high pan-immune-inflammation value ratio in left-sided colon cancer and right-sided colon cancer
VariablesLCC
RCC
aOR (95%CI)
P value
aOR (95%CI)
P value
Sex
    Male1 (Reference)NA1 (Reference)NA
    Female1.36 (0.98-1.88)0.0621.49 (1.06-2.10)0.022
Age
    < 651 (Reference)NA1 (Reference)NA
    ≥ 651.00 (0.73-1.38)0.9791.47 (1.04-2.07)0.028
Tumor grade
    G1-21 (Reference)NA1 (Reference)NA
    G31.45 (0.80-2.62)0.2172.05 (1.17-3.60)0.013
T stage
    T1-21 (Reference)NA1 (Reference)NA
    T3-41.52 (0.96-2.41)0.0762.07 (1.26-3.39)0.004
N stage
    N01 (Reference)NA1 (Reference)NA
    N10.97 (0.68-1.39)0.8741.29 (0.85-1.95)0.237
    N21.58 (0.93-2.67)0.0891.11 (0.63-1.945)0.715
Tumor size
    < 5 cm1 (Reference)NA1 (Reference)NA
    ≥ 5 cm2.55 (1.85-3.51)< 0.0012.19 (1.55-3.10)< 0.001
Vascular
    No-invasion1 (Reference)NA1 (Reference)NA
    Invasion0.83 (0.56-1.25)0.3790.86 (0.56-1.30)0.470
Perineural
    No-invasion1 (Reference)NA1 (Reference)NA
    Invasion1.09 (0.69-1.72)0.7260.61 (0.36-1.02)0.059
MMR
    pMMR1 (Reference)NA1 (Reference)NA
    dMMR2.53 (1.53-4.18)< 0.0011.80 (1.18-2.76)0.006
CEA
    Low1 (Reference)NA1 (Reference)NA
    High1.94 (1.28-2.95)0.0021.20 (0.80-1.80)0.376
CA19-9
    Low1 (Reference)NA1 (Reference)NA
    High1.01 (0.62-1.62)0.9821.55 (0.87-2.74)0.134