Table 4.

Significant predictors of therapy success (percentage of patients with a ≥50% decrease in AHI from baseline, model 1), complete response (AHI < 10 events/h, model 2), and long-term treatment continuation (model 3) on multivariate analysis.

	Odds Ratio (95% CI)	P
Model 1
Baseline AHI 15 to ≤ 30 events/h (moderate OSA vs mild OSA)	3.49 (1.26–9.64)	.0190
Baseline AHI ≥ 30 events/h (severe OSA vs mild OSA)	4.74 (1.59–14.11)	.0190
No previous CPAP therapy	2.47 (1.25–4.88)	.0161
Treatment success after 3- to 6-month follow-up	3.99 (1.57–10.14)	.0161
Model 2
Body weight change (per 1-kg increase)	0.88 (0.82–0.96)	.0033
Dental class II (vs class I)	5.61 (2.25–14.01)	.0011
Baseline apnea index (per 1-event/h increase)	0.95 (0.90–0.99)	.0188
Model 3
Self-reported sleep duration 7–8 h (vs ≤ 6 h)	1.96 (1.12–3.45)	.0285
MAD device renewal (yes vs no)	4.65 (2.24–9.66)	<.0001

AHI = apnea-hypopnea index, CI = confidence interval, CPAP = continuous positive airway pressure, MAD = mandibular advancement device, OSA = obstructive sleep apnea.