Table I.

Demographic, clinical and polysomnographic findings.

Patient	Gender	Age (years)	BMI (kg/m2)	Tonsillar size 17	AHI (n/H)	Mean O2 saturation	NOHL classification 20,21	Pre-operative ESS 19	Post-operative ESS 19	Pre-operative LAS 18	Post-operative LAS 18	Pre-operative SSS 18	Post-operative SSS 18	VAS pain 23	VAS satisfaction	Follow-up (months)
1	M	42	25.8	2	15	95.6	N3O2cH0L0	10	8	8	0	8	0	3	10	25
2	M	46	28.0	1	16	94.0	N2O1cH0L0	10	3	8	2	8	2	2	8.5	17
3	M	43	29.4	2	17	93.2	N2O2cH0L0	13	3	7	2	6	2	4	10	14
4	M	65	29.0	1	14	94.5	N2O1cH0L0	15	9	8	2	8	2	4	9	6
Median		44.5	28.5	2	15.5	94.2		11.5	5.5	8	2	8	2	3.5	9.5	15.5

M: male; BMI: body mass index; AHI: apnoea/hypopnoea Index; n: number; H: hour; NOHL: nose, oropharyngeal, hypopharyngeal, laryngeal region (site of vibration, site of collapse and obstruction during Sleep Endoscopy, according to Vicini et al. ²⁰,²¹. In particular, pattern of collapse was evaluated according to the shape of the dynamic collapse in oropharyngeal, hypopharyngeal and laryngeal region as antero-posterior collapse (ap), transversal collapse (t), and circular collapse (c); the severity of collapse was graded as follows: grade 1 = 0-25% reduction in airways; grade 2 = 25-50% reduction in airways; grade 3 = 50-75% reduction in airways; grade 4 = 75-100% reduction in airways. Nasal obstruction was graded as follows: grade 1 = 0-25% reduction in nasal respiratory space; grade 2 = 25-50% reduction in nasal respiratory space; grade 3 = 50-75% reduction in nasal respiratory space; grade 4 = 75-100% reduction in nasal respiratory space ²⁰,²¹; ESS: Epworth sleepiness scale ¹⁹; LAS: linear analogue scale ¹⁸; SSS: snoring scale score ¹⁸; VAS: visual analogue scale.