Table 3. Multivariate model.

	Exposed	Not exposed	Hazard ratio (95% CI)	p value	Wald test
PPS ≤ 50a	205	474	1.699 (1.351–2.137)	< 0.000	20.582
Inpatienta	145	534	1.682 (1.327–2.132)	< 0.000	18.496
Low response to treatmentb	291	380	1.409 (1.143–1.738)	< 0.001	10.323

^a2 missing cases

^b10 missing cases