Table 2.

Univariate and multivariate Cox regression of NT-proBNP ratio in the total patients and different subgroups.

Subgroup		Univariable Cox regression			Multivariable Cox regression
		HR (95% CI)	SE	P	HR (95% CI)	SE	P
Total COVID-19 patients	Quantile 2 vs quantile 1	3.38 (1.73–6.60)	0.34	< 0.001	3.14 (1.60–6.16)	0.34	0.001
	Quantile 3 vs quantile 1	9.39 (5.05–17.48)	0.32	< 0.001	8.82 (4.72–16.49)	0.32	< 0.001
	Quantile 4 vs quantile 1	22.53 (12.29–41.31)	0.31	< 0.001	22.83 (12.39–42.05)	0.31	< 0.001
COVID-19 patients in 2020	Quantile 2 vs quantile 1	5.03 (0.62–41.00)	1.07	0.131	4.82 (0.58–40.00)	1.08	0.145
	Quantile 3 vs quantile 1	8.77 (1.15–66.65)	1.04	0.035	6.91 (0.88–54.51)	1.05	0.044
	Quantile 4 vs quantile 1	44.55 (6.17–321.73)	1.009	< 0.001	45.76 (6.32–331.64)	1.01	< 0.001
COVID-19 patients in 2022	Quantile 2 vs quantile 1	4.41 (1.94–10.01)	0.42	< 0.001	4.04 (1.77–9.23)	0.42	0.001
	Quantile 3 vs quantile 1	13.44 (6.24–28.92)	0.39	< 0.001	12.06 (5.58–26.09)	0.39	< 0.001
	Quantile 4 vs quantile 1	21.30 (9.98–45.44)	0.39	< 0.001	22.22 (10.31–47.91)	0.39	< 0.001