Identification and treatment of persistent small airway dysfunction in paediatric patients with asthma: a retrospective cohort study

Table 4 Improvement of SAD in patients who continuously used ICS in the past

Item 1	Item 2	Asthma with SAD	Asthma without SAD	χ²	Unilateral P
In the 4th month
	Using ICS	17(77.3)	5(22.7)	/	0.108
	Using ICS/LABA	3(42.9)	4(57.1)
In the 8th month
	Using ICS	9(56.3)	7(43.7)	/	0.029
	Using ICS/LABA	2(15.4)	11(84.6)

Data were presented as number (%); the difference between groups was analyzed by the fisher exact test
ICS, inhaled corticosteroids; LABA, long-acting beta-agonist; SAD, small airway dysfunction

ISSN: 1471-2466