Table 4. Hazard ratios and discriminatory power (C-index) for disease-free survival, stratified by low- and high-risk EC.

	Low risk (n=250)		High risk (n=105)
	HR (95% CI)	C-index	HR (95% CI)	C-index
FIGO, LVSI	5.1 (3.5–7.6), 8.0 (5.6–11.3)	0.85	3.8 (2.0–7.0), 2.0 (1.3–3.0)	0.70
CTLs	0.61 (0.43–0.86)	0.52	0.23 (0.15–0.37)	0.67
Memory T cells	0.90 (0.85–0.96)	0.59	0.75 (0.66–0.84)	0.71
FIGO, LVSI, CTLs	5.1 (3.4–7.5), 8.1 (5.7–11.5), 1.2 (0.79–1.7)	0.86	3.2 (1.7–5.9), 2.0 (1.3–3.1), 0.29 (0.19–0.45)	0.79
FIGO, LVSI, memory T cells	4.4 (2.9–6.7), 7.5 (5.1–11.1), 1.2 (0.86–1.7)	0.87	1.7 (0.9–3.3), 2.9 (1.8–4.6), 0.73 (0.64–0.83)	0.76

Abbreviations: CI=confidence interval; CTLs=cytotoxic T cells; HR=hazard ratio; FIGO=FIGO disease classification 1988, LVSI=lymphovascular invasion.