Table 2.

Overview of changes in airway volume stratified by surgery

Characteristic	LeFort III (n = 24)	Monobloc (n = 16)	Monobloc with LeFort II (n = 3)	p	Total
Total airway volumetric increase (%)	113.7 (27.5–176.8)	97.3 (59.4–169.8)	146.3	0.672*	111.0 (36.2–172.5)
Nasal airway volumetric increase (%)	109.2 (33.9–190.4)	90.9 (54.5–144.6)	195.4 (69.7–196.0)	0.993**	98.9 (34.9–195.4)
Pharyngeal airway volumetric increase (%)	71.4 (17.8–145.8)	79.0 (44.5–148.2)	93.3	0.436*	82.1 (31.9–148.2)
Movement of anterior nasal spine
Magnitude (mm)	15 (11–20)	20 (17–21)	28 (28–32)	0.004**	19 (14–23)
Horizontal (mm)	15 (11–20)	20 (17–22)	28 (27–32)	0.004**	19 (14–22)
Vertical (mm)	− 1 (− 3–3)	1 (0–3)	8 (6–9)	0.024**	1 (− 2–3)

^*The Mann–Whitney U test for non-parametric data, two tailed, p < 0.05 is considered statistically significant

^**p-values are from the Kruskal–Wallis test for non-parametric data, p < 0.05 is considered statistically significant