Baseline NT-proBNP levels as a predictor of short-and long-term prognosis in COVID-19 patients: a prospective observational study

Table 2 In-hospital complications and mortality for all patients and according to age-adjusted NT-proBNP levels

	All Patients n 499	High NT-proBNP n 68	Low NT-proBNP n 431
	n (%)	n (%)	n (%)	p*
Acute heart failure	25 (5.0)	17 (25)	8 (1.9)	< 0.001
Need for non-invasive mechanical ventilation^{^}	32 (6.4)	10 (14.7)	22 (5.1)	< 0.001
Need for invasive mechanical ventilation	45 (9.0)	14 (20.6)	31 (7.2)	< 0.001
Mortality	85 (17.0)	41 (60.3)	44 (10.2)	< 0.001

^{^} Non-invasive mechanical ventilation included high-flow nasal cannula and non-invasive ventilation
*p-value for comparison between patients with high vs. low NT-proBNP levels

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