3.

Multivariate analysis of PFS and OS (N=79)

Variables	PFS				OS
	HR	95% CI	P		HR	95% CI	P
PFS, progression-free survival; OS, overall survival; HR, hazard ratio; 95% CI, 95% confidence interval; ASCT, autologous stem cell transplantation; PET, positron emission tomography.
Post-ASCT PET
1–3	1.000				1.000
4–5	13.134	4.514–38.213	<0.001		33.122	7.231–151.719	<0.001
No. of chemotherapy regimen before ASCT
<2	1.000
≥2	4.264	1.488–12.219	0.007
Age					1.053	1.011–1.096	0.013