Discrepancies between preoperative assessment and final pathological criteria in early gastric cancer

Table 8 Univariate analysis of pathological features among three preoperative assessment groups, n (%)

Variable	Same (n = 592)	Under (n = 162)	Over (n = 42)	χ2 value	P value
Diagnosis of tumor diameter				15.067	< 0.001
Accurate diagnosis	526 (88.9)	126 (77.8)	33 (82.5)
Misdiagnosis	66 (11.1)	36 (22.2)	9 (21.4)
Diagnosis of depth				76.933	< 0.001
Accurate diagnosis	485 (81.9)	78 (48.1)	32 (76.2)
Misdiagnosis	107 (18.1)	84 (51.9)	10 (23.8)
Diagnosis of ulcerative findings				16.047	< 0.001
Accurate diagnosis	571 (96.5)	151 (93.2)	35 (82.5)
Misdiagnosis	21 (3.5)	11 (6.8)	7 (17.5)
Diagnosis of main histology
Accurate diagnosis	548 (92.6)	85 (52.5)	27 (64.3)	155.227	< 0.001
Misdiagnosis	44 (7.4)	77 (47.5)	15 (35.7)

Same: Same-estimated; Under: Under-estimated; Over: Over-estimated. For same-estimated cases, postoperative management aligned with preoperative assessment, underestimated and overestimated groups represented cases requiring therapeutic escalation or de-escalation, respectively.