The impact of the nodal status on the overall survival of non-surgical patients with esophageal squamous cell carcinoma

Table 2 Effect of nodal status on risk of GTV failure

Variables	Hazard Ratio	95% CI	P
No. of LNs (baseline, N0)			0.001
1–2	1.025	0.684–1.538	0.903
3–6	2.445	1.627–3.672	0.012
≥ 7	2.457	1.222–4.941	0.001
Extent of LNs (baseline, N0)			0.001
1 region	1.135	0.771–1.672	0.521
2 regions	2.189	1.434–3.340	0.001
3 regions	3.081	1.482–6.406	0.002
Size of LNs (baseline, N0)			0.006
≤ 2 cm	1.331	0.922–1.921	0.127
>2 cm	2.237	1.367–3.661	0.001

ISSN: 1748-717X