Table 4: Multivariate analysis of factors affecting accuracy of the determination of the depth of cancer invasion.

valueOdds ratio95% CI (%)

UL(+) typeP < 0.0018.5734.632–15.867
Tumor size >2 cmP = 0.0152.0711.149–3.731
Undifferentiated 1.6640.895–3.093
US-endoscopeP = 0.0042.4721.330–4.593