Table 5.

Comfort/dyspnea scale

	NHF small	NHF medium	NHF large	nCPAP	nBiPAP
Comfort scale (1–10)
Mean ± SD	4.3±1.5	3.4±1.5	3.9±2.0	5.4±1.9	4.4±2.4
P-value	<0.05		>0.05	<0.01	>0.05
Dyspnea scale (1–5)
Mean ± SD	2.7±0.7	2.6±0.9	2.6±0.9	3.2±0.7	2.8±1.1
P-value	>0.05		>0.05	<0.01	>0.05

Note: P-values in comparison to NHF with medium prong size.

Abbreviations: nBiPAP, (nasal) bilevel positive airway pressure; nCPAP, (nasal) continuous positive airway pressure; NHF, nasal highflow; SD, standard deviation.