TABLE 3

Overview of studies using continuous positive airway pressure (CPAP) in COVID-19

Reference	Inclusion months	DNI		Full-code
Reference	Inclusion months	n	CPAP survival %	n	CPAP survival %	IMV treatment %	IMV death %
*Bellani et al.* [4]**	Mar 2020	138	NR	640	61	47	25
*Di Domenico et al.* [5]**	Feb 2020	27	12	63	43	57	47
*Aliberti et al.* [6]**	Mar–Apr 2020	65	44	93	63	22	27
*Bradley et al.* [7]**	NR	70	30	0	–	–	–
*Coppadoro et al.* [8]**	Mar–Apr 2020	128	28	177	69	31	41
Lawton [9]	Feb–May 2020	89	29	79	63	37	NR
*De Vita et al.* [10]**	Mar–Apr 2020	NR	–	367	59	41	NR
*Franco et al.* [11]**	Mar–May 2020	NR	–	330	71	25	32
*Potalivo et al.* [12]**	Feb–Apr 2020	NR	–	71	80	35	35
*Vaschetto et al.* [13]**	Mar–Apr 2020	140	27	397	69	45	42
*Ramirez et al.* [14]**	Feb-May 2020	38	29	120	66	34	37
*Brusasco et al.* [1]**	Mar–Apr 2020	15	73	49	86	11	71
*Nightingale et al.* [15]**	Sep–Nov 2000	32	56	56	65	25	64
*Medrinal et al.* [16]**	Oct–Dec 2020	74	32	118	44	56	66
*Santus et al.* [17]**	Mar 2020–Mar 2021	51	37	303	64	32	66
*Sykes et al.* [18]**	Apr 2020–Mar 2021	98	28	42	74	26	100
*Perkins et al.* [19]**	Apr 2020–May 2021	NR	–	377	64	36	58
Present study	Sep 2020–Jun 2021	123	50	158	71	26	32

DNI: do-not-intubate order; IMV: invasive mechanical ventilation; NR: not reported.