. Author manuscript; available in PMC: 2018 Aug 1.

Published in final edited form as: J Sleep Res. 2017 Nov 6;27(4):e12631. doi: 10.1111/jsr.12631

Table 3.

Former nasal surgery had no impact on AHI or nasal dimensions. A larger proportion of patients with previous nasal surgery were reporting nocturnal nasal obstruction.

Former Nasal Surgery
	Nasal surgery n (%) 86 (11)	No nasal surgery n (%) 724 (89)	p-value
Apnoea-hypopnea index	40.7 ± 16.2	45.3 ± 21.1	0.12
TMCA, (cm²)	1.05 ± 0.30	1.05 ± 0.31	0.99
MCA-min, (cm²)	0.43 ± 0.16	0.43 ± 0.17	0.95
TVOL, (cm³)	4.06 ± 0.75	4.11 ± 0.81	0.84
Nocturnal nose obstruction	47 %	34 %	0.02

MCA-min: Minimal cross-sectional area within the smallest nostril of either left or right before decongestant spray

TMCA: Total minimal cross-section area in the nose, left and right nostril combined before nasal decongestant spray

TVOL: Total volume of left and right nasal volume combined before nasal decongestant spray

Significance in bold.

Numbers given as mean ± SD if not specified and p-values when comparing mean values was calculated with Mann-Whitney U test.

The chi-squared test was used comparisons between nominal data in independent groups (here show in %).