Table 2.

Seven- and 30-day mortality associated with IABP in patients with AMICS at different SCAI SHOCK stages

	7-day mortality		30-day mortality
	OR (95% CI)	P	OR (95% CI)	P
PSM
SCAI SHOCK stage A/B	0.31 (0.05–1.30)	0.147	0.19 (0.03–0.73)	0.034
SCAI SHOCK stage C/D/E	1.39 (0.76–2.59)	0.287	1.49 (0.84–2.65)	0.172
CBPS
SCAI SHOCK stage A/B	0.32 (0.07–1.51)	0.148	0.22 (0.05–0.97)	0.045
SCAI SHOCK stage C/D/E	1.50 (0.84–2.70)	0.171	1.55 (0.90–2.67)	0.110

CBPS, covariate balancing propensity score; CI, confidence interval; IABP, intra-aortic balloon pump; OR, odds ratio; PSM, propensity score matching.