. 2016 Jul 29;6:30629. doi: 10.1038/srep30629

Table 4. Spearman Correlation of Patient Characteristics with Drug-Induced Sleep Endoscopic Findings.

Site	Multi-Level	Velopharynx	Oropharynx		Tongue Base	Epiglottis
Site	≥2 sits	Velopharynx	Tonsils	Lateral Wall	Tongue Base	Epiglottis
Degree of obstruction	Complete	Complete	Partial-to-Complete	Partial-to-Complete	Complete	Partial-to-Complete
N (%)	15 (42)	18 (50)	18 (50)	13 (37)	21 (58)	14 (39)
Age	0.25	0.39^A	−0.32	0.37^A	0.25	0.20
Male gender,	−0.29	0.00	0.24	−0.32	−0.21	−0.30
BMI	0.37^A	−0.08	−0.12	0.22	−0.05	0.29
Neck circumference	0.17	0.01	−0.17	0.13	−0.18	0.13
Tonsil size	0.07	0.25	0.25	0.02	−0.10	0.03
MMP	0.23	0.25	0.06	0.05	0.07	0.28
FAS	0.14	−0.06	0.05	−0.11	0.08	0.13
Snoring severity	0.05	0.10	0.04	0.07	0.04	0.04
ESS	0.13	0.16	−0.15	0.33^A	0.20	0.09
AHI	0.39^A	0.36^A	−0.14	0.36^A	0.15	0.41^A
Mean SaO₂	−0.60^A	−0.38^A	0.09	−0.33^A	−0.24	−0.52^A
Minimal SaO₂	−0.48^A	−0.51^A	0.05	−0.35^A	−0.29	−0.42^A

NOTE: Data are the unadjusted Spearman correlation coefficients/adjusted partial correlation coefficients for BMI.

^AP-values are less than 0.05.

AHI, apnea-hypopnea index; A-stage, anatomic stage; BMI, body mass index; ESS, Epworth Sleepiness Scale; FAS, Friedman’s anatomic stage; MMP, modified Mallampati position; SaO₂, arterial oxygen saturation; VAS, visual analogue scale.