Validation of the CPAP Habit Index-5: A Tool to Understand Adherence to CPAP Treatment in Patients with Obstructive Sleep Apnea

Table 5

The association between habits after 6 months and CPAP adherence at 12 months (𝑛=52).

Dependent variable	Independent variables	Initial model		Full model
		𝐵 (se)	95% CI	𝐵 (se)	95% CI
Total hours of CPAP use 𝑛=52	(i) Habits	−132.3 (14.3)***	−161.1/−103.5	−141.9 (15.6)***	−173.3/−110.5
	(ii) OSA severity at baseline			−4.0 (2.7)	−9.5/1.5
	(iii) Excessive daytime sleepiness at baseline			−11.7 (15.5)	−42.8/19.4
	(iv) Attitudes to CPAP treatment after 2 weeks			5.8 (21.0)	−36.4/48.1
	(v) Side effects of CPAP treatment after 6 months			15.6 (10.6)	−6.0/37.2
	Model statistics	𝐹(1,50)=85.10, 𝑃<0.001, 𝑅^2=0.63		𝐹(5,46)=18.94,𝑃<0.001,𝑅^2=0.67
Days of CPAP use over 4 h/night 𝑛=52	(i) Habits	−18.4 (2.1)***	−22.6/−14.1	−19.9 (2.3)***	−24.5/−15.3
	(ii) OSA severity at baseline			−0.5 (0.4)	−1.3/0.3
	(iii) Excessive daytime sleepiness at baseline			−1.2 (2.3)	−5.8/3.4
	(iv) Attitudes to CPAP treatment after 2 weeks			2.1 (3.1)	−4.1/8.4
	(v) Side effects of CPAP treatment after 6 months			1.6 (1.6)	−1.6/4.8
	Model statistics	𝐹(1,50)=76.44,𝑃<0.001,𝑅^2=0.60		𝐹(5,46)=16.60,𝑃<0.001,𝑅^2=0.64

^∗∗∗𝑃<0.001.