Table 2. Multivariate backward Cox-regression analysis for disease-free survival after 5 years of KCNQ1 and clinicopathological parameters that were retained in the model.

Parameters	HR	95%-CI	P-value
Isolated tumour deposits	1.594	0.98–2.59	0.06
Nodal stage	1.683	1.30–2.18	0.0001
Angio-invasion	2.062	1.32–3.22	0.001
MSI status	0.589	0.34–1.03	0.06
Low KCNQ1-expression	3.752	2.50–5.64	<0.0001

Abbreviations: CI=confidence interval; HR=hazards ratio; MSI=microsatellite instability.