Table 2. Multivariable proportional hazard regression model, stratified for treatment received, for predicting progression-free survival using data from the training cohort (CALYPSO).

	β-Coefficient	Hazard ratios	95% Confidence interval		P-value
Last platinum chemotherapy (>12 vs 6–12 months)	−0.60	0.55	0.47	0.65	<0.001
White blood count (>6 vs ⩽6 × 109 per l)	0.21	1.23	1.04	1.45	0.01
Largest tumour size (⩽5 cm vs non-measurable)	0.42	1.53	1.24	1.89	<0.001
Largest tumour size (>5 cm vs non-measurable)	0.65	1.91	1.51	2.42	<0.001
Organ sites of metastasis (>1 vs ⩽1)	0.26	1.29	1.08	1.55	0.006
CA-125 (>100 vs ⩽100 IU ml–1)	0.46	1.58	1.33	1.89	<0.001