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. 2019 Nov 8;19(4):427–437. doi: 10.5230/jgc.2019.19.e38

Table 1. MSI status varies based on characteristics of enrolled patients.

Characteristics Overall (n=1,156) MSS (n=1,071; 92.65%) MSI-H (n=85; 7.35%) P-value
Age (years) 57.8±11.6 56.7±11.5 63.4±10.7 <0.001
Sex <0.001
Male 759 (65.7) 720 (67.2) 39 (45.9)
Female 397 (34.3) 351 (32.8) 46 (54.1)
Location <0.001
Upper-third 95 (8.2) 92 (8.6) 3 (3.5)
Middle-third 352 (30.5) 339 (31.7) 13 (15.3)
Lower-third 708 (61.3) 639 (59.7) 69 (81.2)
Size (mm) 26.8±15.6 26.7±15.6 28.3±15.7 0.381
Histology <0.001
Differentiated 588 (51.6) 527 (50.0) 61 (71.8)
Undifferentiated 552 (48.4) 528 (50.0) 24 (28.2)
Lauren classification 0.002
Intestinal 570 (49.3) 516 (48.2) 54 (63.5)
Diffuse 370 (32.0) 357 (33.3) 13 (15.3)
Others 147 (12.7) 186 (17.4) 18 (21.2)
pT stage (%) 0.007
Mucosa 585 (50.6) 554 (51.7) 31 (36.5)
Submucosa 571 (49.4) 517 (48.3) 54 (63.5)
No. of resected LN 37.44±14.49 37.58±14.34 35.73±16.24 0.258
LN metastasis (%) 0.056
Yes 131 (11.3) 116 (10.8) 15 (17.6)
No 1,025 (88.7) 955 (89.2) 70 (82.4)
No. of metastatic LN 0.3±1.5 0.3±1.5 0.4±1.4 0.473
LVI 0.001
Yes 992 (85.8) 142 (13.3) 22 (25.9)
No 164 (14.2) 929 (86.7) 63 (74.1)

Values are expressed as mean±standard deviation or number (%).

MSI = microsatellite instability; MSS = microsatellite stable; MSI-H = microsatellite instability-high; LN = lymph node; LVI = lymphovascular invasion.