Table 5.

Multivariate analysis of risk factors for intraoperative blood loss ≥ 200 mL

Feature		HR	95%CI	P value
Tumor location	Upper 1/3 and 2/3 or more vs lower and middle 1/3	1.717	1.272-2.317	< 0.001
Tumor size	≥ 5 cm vs < 5 cm	1.129	0.833-1.513	0.434
TNM stage	III vs I, II	1.174	0.872-1.580	0.290
Extent of gastrectomy	D1 vs D2 and D2+	1.161	0.860-1.566	0.330
Type of gastrectomy	Total vs subtotal	2.501	1.707-3.663	< 0.001
Combined organ resection	Present vs absent	1.996	1.089-3.659	0.025
Year of surgery	2003-2005 vs 2006-2007	1.452	1.080-1.954	0.014

TNM: Tumour, node, metastasis.