Table 2.

Association of IVIG treatment with mortality

	Total (n)	sHR (95% confidence interval)	P value
PS matched analysis	236	3.50 (1.98–6.19)	< 0.001
PS adjusted analysis	556*	2.98 (1.92–4.60)	< 0.001

IVIG, intravenous immunoglobulin; PS, propensity score; sHR, sub-distribution hazard ratio

*Propensity score could not be calculated for 34 patients due to complete separation by baseline characteristics