Table 4.

Having a small volume at baseline was a predictor of becoming a non‐user of PAP after 2 years compared with having a large volume at baseline

	Unadjusted odds ratio (95% CI)	p‐value for group difference	Adjusted odds ratio (95% CI)	p‐value for group difference
Nocturnal nasal obstruction at baseline, ≥ 3 × per week	1.11 (0.79–1.57)	0.55	1.18 (0.80–1.74)	0.42
TMCA percentiles at baseline, comparing the smallest quartile with the largest	1.80 (1.11–2.93)	0.02	0.35 (0.07–1.83)	0.22
TVOL, percentiles at baseline, comparing the smallest quartile with the largest	2.22 (1.35–3.67)	0.002	3.31 (1.07–10.26)	0.04
MCA‐min, percentiles at baseline, comparing the smallest quartile with the largest	1.80 (1.08–3.00)	0.02	2.01 (0.48–8.47)	0.34

The table shows the prediction of PAP non‐use (early and late quitters) depending on subjective and objective nasal obstruction at baseline. Included in this analysis: auto‐adjusting PAP, continuous PAP device and adaptive servo ventilation. Significance in bold. Multiple regression analysis was used.

Odds ratio adjusted for age, BMI and AHI at baseline.

CI, confidence interval; 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.