Research Article
Establishment and Validation for Predicting the Lymph Node Metastasis in Early Gastric Adenocarcinoma
Table 2
Difference analysis of patients with or without LNM in the training set.
| | Variables | Total (n = 505) | Non-LNM (n = 398) | LNM (n = 107) | Statistic | |
| | Age (years), mean ± SD | 69.05 ± 11.76 | 69.41 ± 11.62 | 67.74 ± 12.24 | t = 1.30 | 0.193 | | Gender, n (%) | | | | χ2 = 0.266 | 0.606 | | Female | 214 (42.38) | 171 (42.96) | 43 (40.19) | | | | Male | 291 (57.62) | 227 (57.04) | 64 (59.81) | | | | T stage, n (%) | | | | χ2 = 30.817 | <0.001 | | T1a | 176 (34.85) | 163 (40.95) | 13 (12.15) | | | | T1b | 329 (65.15) | 235 (59.05) | 94 (87.85) | | | | Primary site, n (%) | | | | χ2 = 0.450 | 0.930 | | Overlap | 41 (8.12) | 31 (7.79) | 10 (9.35) | | | | Lower | 267 (52.87) | 210 (52.76) | 57 (53.27) | | | | Middle | 185 (36.63) | 147 (36.93) | 38 (35.51) | | | | Upper | 12 (2.38) | 10 (2.51) | 2 (1.87) | | | | Type, n (%) | | | | χ2 = 2.076 | 0.354 | | Diffuse | 36 (7.13) | 26 (6.53) | 10 (9.35) | | | | Intestinal | 424 (83.96) | 339 (85.18) | 85 (79.44) | | | | Others | 45 (8.91) | 33 (8.29) | 12 (11.21) | | | | Tumor size (cm), n (%) | | | | χ2 = 27.052 | <0.001 | | <1 | 135 (26.73) | 110 (27.64) | 25 (23.36) | | | | 1- | 117 (23.17) | 92 (23.12) | 25 (23.36) | | | | 2- | 60 (11.88) | 43 (10.80) | 17 (15.89) | | | | 3- | 101 (20.00) | 66 (16.58) | 35 (32.71) | | | | 4- | 92 (18.22) | 87 (21.86) | 5 (4.67) | | | | Grade, n (%) | | | | χ2 = 15.375 | <0.001 | | I | 78 (15.45) | 72 (18.09) | 6 (5.61) | | | | II | 206 (40.79) | 167 (41.96) | 39 (36.45) | | | | III | 221 (43.76) | 159 (39.95) | 62 (57.94) | | |
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Note: LNM: lymph node metastasis.
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