Table 2. Clinicopathologic and biologic factors affecting survival rate.

	Univariate analysis			Multivariate analysis
Variable	RR	95% CI	P value	RR	95% CI	P value
Age at diagnosis > 1.5 year versus ≤ 1.5 year	4.098	1.938 – 8.662	0.001	1.242	0.459 – 3.357	0.670
Clinical stage Advanced (3 & 4) versus early (1, 2 and 4S)	13.328	4.146 – 42.842	< 0.001	5.113	1.314 – 19.894	0.019
MYCN Amplified versus non-amplified	3.457	2.048 – 5.834	< 0.001	2.034	1.135 – 3.645	0.017
GALNT2 expression Negative versus positive	4.320	2.265 – 8.239	< 0.001	2.495	1.248 – 4.987	0.010
INPC histology Unfavorable versus favorable	3.720	2.115 – 6.543	< 0.001	2.220	1.193 – 4.133	0.012
Primary tumor site Adrenal versus non-adrenal	1.299	0.764 – 2.211	0.334	ND	ND	ND

Abbreviations: INPC, International Neuroblastoma Pathology Classification; RR, risk ratio; 95% CI, 95% confidence interval; ND, not done.