Table 1.

The frequency of HFNC and NPPV use in patients with COVID-19 related acute respiratory failure.

Countries	HFNC	NPPV
US [12]	12 (4.7%)	3 (1.2%)
UK [13]	9244 (54.9%)	2670 (15.9%)
Germany [14]	286 (16.6%)
Italy [15]	137 (10.6%)
France, Switzerland, and Belgium [16]	786 (19%)	230 (6%)
China [17]	33 (63.5%)	29 (55.8%)