Table 3. Variant multivariate Cox proportional hazards models.

		Hazard ratio	Confidence interval	Significance
1	AC treatment duration	0.89 a	0.85–0.94	<0.001
2	AC started day 1–2	0.63	0.38–1.01	0.055
	AC started day ≥3	0.32	0.19–0.55	<0.001
3	CS treatment b	0.62	0.43–0.91	0.016
4	CS started day 1–2	1.41	0.84–2.30	0.187
	CS started day ≥3	0.48	0.28–0.68	<0.001

Abbreviations: AC, anticoagulation; CS, corticosteroid.

^aPer 1-day increase.

^bCompared to No CS treatment.