Table 3.

Median duration (days) of ventilation assistance (excluding patients treated by prone position only) by grades of retrognathia, glossoptosis and laryngomalacia.

	Grades
	Mild	Moderate	Severe	p-value
Retrognathia	142.5 [101.5–172.6] (n = 4)	15 [1–136.5] (n = 20)	287.5 [45–1095] (n = 9)	NS*
Glossoptosis	54 [36.2–202.5] (n = 7)	6 [1–35] (n = 12)	141 [63.7–309.9] (n = 14)	NS*
Laryngomalacia	150 [3–240.6] (n = 5)	/	1,825 [1003.7–2258.7] (n = 4)	p = 0.01**

Data are expressed as median and interquartile range [25–75th percentile]. NS, non-significant;

^*by Kruskal-Wallis test,

^**by Mann-Whitney test.