Table 5. Multivariate analysis for non-adherent group using five candidate variables as p-value<0.05 at univariate analysis by binary logistic regression analysis

Variable	OR	95% CI	p-value
OSA severity (mild/moderate vs. severe)	3.433	1.329–8.870	0.011*
PLMI	1.011	0.989–1.034	0.311
Mean pressure (cmH2O)	0.838	0.628–1.118	0.229
Mean usage time (min)	1.000	0.992–1.007	0.900
Days ≥4 hours a day (%)	0.970	0.943–0.997	0.029*

Selected variables were performed by forward conditional method.
Statistically significant with p<0.05.
OR: odds ratio, CI: confidence interval, OSA: obstructive sleep apnea, PLMI: periodic limb movement index.