Table 3. Multivariate analysis for risk factors of bacteremia during the early transplant period of tandem HDCT/auto-SCT.

Potential risk factors	Gram-positive bacteremia			Gram-negative bacteremia
	OR	95% CI	p-value	OR	95% CI	p-value
Second HDCT/auto-SCT (compared to the first)	0.72	0.21~2.49	0.604	0.67	0.32~1.40	0.286
Inclusion of TBI and/or thiotepa in HDCT regimen	6.28	1.34~29.50	0.020	0.60	0.29~1.26	0.178
Infused CD34+ cells <2 × 106/kg	3.35	1.02~10.98	0.046	1.40	0.63~3.12	0.416
Age at transplantation >100 months	0.93	0.26~3.29	0.911	2.56	1.25~5.24	0.010

OR, odds ratio; CI, confidence interval; HDCT/auto-SCT, high-dose chemotherapy and autologous transplantation; TBI, total body irradiation.