Before propensity score matching (n = 93) | After propensity score matching (n = 63) | |||||
---|---|---|---|---|---|---|
Characteristics | Non-ICG (n = 70) | ICG (n = 23) | p-value | Non-ICG (n = 42) | ICG (n = 21) | p-value |
Age over 65 (%) | 38 (54.3) | 10 (43.5) | 0.51 | 21 (50.0) | 9 (42.9) | 0.79 |
Gender (%) | 0.55 | 1.000 | ||||
Male | 45 (64.3) | 17 (73.9) | 29 (69.0) | 15 (71.4) | ||
Female | 25 (35.7) | 6 (26.1) | 13 (31.0) | 6 (28.6) | ||
EGD Result (%) | 0.61 | 1.00 | ||||
AGC | 10 (14.3) | 5 ( 21.7) | 0.61 | 8 (19.0) | 4 (19.0) | |
EGC | 60 (85.7) | 18 ( 78.3) | 34 (81.0) | 17 (81.0) | ||
T (%) | 0.34 | 1.00 | ||||
T1 | 60 (85.7) | 19 (82.6) | 38 (90.5) | 19 (90.5) | ||
T2 | 9 (12.9) | 3 (13.0) | 4 ( 9.5) | 2 ( 9.5) | ||
T3 | 1 ( 1.4) | 0 ( 0.0) | – | – | ||
T4a | 0 ( 0.0) | 1 ( 4.3) | – | – | ||
N (%) | 0.09 | 1.00 | ||||
N0 | 63 (90.0) | 18 (78.3) | 37 (88.1) | 18 (85.7) | ||
N1 | 7 (10.0) | 3 (13.0) | 6 (11.9) | 3 (14.3) | ||
N3a | 0 ( 0.0) | 1 ( 4.3) | – | – | ||
N3b | 0 ( 0.0) | 1 ( 4.3) | – | – | ||
Stage (%) | 0.03 | 1.00 | ||||
I | 68 (97.1) | 21 (91.3) | 41 (97.6) | 21 (100.0) | ||
II | 2 ( 2.9) | 0 ( 0.0) | 1 ( 2.4) | 0 ( 0.0) | ||
III | 0 ( 0.0) | 2 ( 8.7) | ||||
Location (%) | 0.44 | 0.93 | ||||
Lower | 42 (60.0) | 11 (47.8) | 22 (52.4) | 10 (47.6) | ||
Middle | 28 (40.0) | 12 (52.2) | 20 (47.6) | 11 (52.4) | ||
LI (%) | 1.00 | 0.53 | ||||
N | 44 (62.9) | 14 (60.9) | 23 (54.8) | 14 (66.7) | ||
Y | 26 (37.1) | 9 (39.1) | 19 (45.2) | 7 (33.3) | ||
VI (%) | 1.00 | 1.00 | ||||
N | 68 (97.1) | 23 (100.0) | 42 (100.0) | 21 (100.0) | ||
Y | 2 (2.9) | 0 ( 0.0) | 0 ( 0.0) | 0 ( 0.0) | ||
NI (%) | 0.73 | 1.00 | ||||
N | 59 (84.3) | 18 (78.3) | 37 (88.1) | 18 (85.7) | ||
Y | 11 (15.7) | 5 (21.7) | 5 (11.9) | 3 (14.3) | ||
Tumor size (cm), mean (SD) | 2.76 (1.70) | 3.34 (2.95) | 0.24 | 2.56 (1.56) | 2.58 (1.58) | 0.97 |
Dissected lymph nodes, mean (SD) | 30.54 (10.63) | 31.17 (8.21) | 0.80 | 31.33 (11.95) | 31.14 (8.43) | 0.95 |
Positive lymph nodes, mean (SD) | 0.16 (0.50) | 1.43 (4.34) | 0.02 | 0.17 (0.49) | 0.14 (0.36) | 0.84 |
Positive node ratio (%), mean (SD) | 0.54 (1.75) | 4.61 (13.75) | 0.02 | 3.74 (1.56) | 3.58 (1.52) | 0.81 |
PRM (cm), mean (SD) | 4.11 (1.79) | 3.42 (1.60) | 0.10 | 3.74 (1.56) | 3.58 (1.52) | 0.70 |
Operation time (min), mean (SD) | 270.1 (37.3) | 246.1 (46.7) | 0.01 | 273.0 (36.6) | 239.3 (42.3) | 0.002 |