Pediatric asthma severity score is associated with critical care interventions

Table 4 Respiratory support required for each severity group

Respiratory support	Mild	Moderate	Severe	Pearson χ2
High flow nasal cannula	1 (2.6)	4 (3.4)	1 (3.2)	0.96
Noninvasive positive pressure ventilation	0	2 (1.7)	4 (12.9)	0.003
Invasive mechanical ventilation	0	0	1(3.2)	0.078

Breakdown of respiratory support required in each severity group, total n (%) reported, P value obtained from extended fisher exact.