Table 1 Comparison between I-SMTLs and non-I-SMTLs based on propensity score-matching cohort
Variables | I-SMTLs (n = 59) | Before PSM | PSM | ||
|---|---|---|---|---|---|
Non-I-SMTLs# (n = 1119) | p value | Non-I-SMTLs& (n = 118) | p value | ||
Sex (male/ female) | 30/29 | 475 /644 | 0.256 | 67/51 | 0.422 |
Age, Mean ± SD | 52.41 ± 14.4 | 53.18 ± 11.84 | 0.476 | 52.15 ± 12.42 | 0.703 |
Location (n, %) | < 0.001*** | 1.000 | |||
Esophagus | 10 (16.95) | 187 (16.71) | 20 (16.95) | ||
Stomach | 16 (27.12) | 642 (57.37) | 32 (27.12) | ||
Duodenum | 2 (3.39) | 8 (0.71) | 4 (3.39) | ||
Colon | 9 (15.25) | 18 (1.61) | 18 (15.25) | ||
Rectum | 22 (37.29) | 264 (23.59) | 44 (37.29) | ||
Size (n, %) | 0.016* | 0.064 | |||
≤ 2 cm | 58 (98.31) | 995 (88.92) | 107 (90.68) | ||
>2 cm | 1 (1.69) | 124 (11.08) | 11 (9.32) | ||
Color (n, %) | 0.223 | 0.514 | |||
Normal | 45 (76.27) | 932 (83.29) | 83 (70.34) | ||
Yellowish or white | 14 (23.73) | 187 (16.71) | 35 (29.66) | ||
Surface features (n, %) | 0.52 | 1.000 | |||
Normal | 49 (83.05) | 972 (86.86) | 98 (83.05) | ||
Changed | 10 (16.95) | 147 (13.14) | 20 (16.95) | ||
Originating layer (n, %) | < 0.001*** | 0.001** | |||
Deep mucosa | 6 (10.17) | 103 (9.2) | 15 (12.71) | ||
Muscularis mucosa | 7 (11.86) | 186 (16.62) | 20 (16.95) | ||
Submucosa | 42 (71.19) | 247 (22.07) | 50 (42.37) | ||
Muscularis propria | 4 (6.78) | 583 (52.1) | 33 (27.97) | ||
Echogenicity (n, %) | < 0.001*** | < 0.001*** | |||
Echoless | 0 (0) | 3 (0.27) | 0 (0) | ||
Hypo-echoic | 41 (69.49) | 1033 (92.31) | 96 (81.36) | ||
Iso-echoic | 2 (3.39) | 8 (0.71) | 2 (1.69) | ||
Hyper-echoic | 5 (8.47) | 55 (4.92) | 18 (15.25) | ||
Mixed-echoic | 11 (18.64) | 20 (1.79) | 2 (1.69) | ||
Echo heterogeneity (n, %) | < 0.001*** | < 0.001*** | |||
Homogeneous | 22 (37.29) | 868 (77.57) | 93 (78.81) | ||
Inhomogeneous | 37 (62.71) | 251 (22.43) | 25 (21.19) | ||
Boundary (n, %) | < 0.001*** | < 0.001*** | |||
Clear | 34 (57.63) | 1021 (91.24) | 102 (86.44) | ||
Un-clear | 25 (42.37) | 98 (8.76) | 16 (13.56) | ||