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

Table 1

A description of the CPAP Habit Index-5.

(1) Using the CPAP nightly is part of my routines a normal week	Strongly agree; 1	Agree; 2	Undecided; 3	Disagree; 4	Strongly disagree; 5
(2) A special reason is needed if I'm not going to use the CPAP during a normal night	Strongly agree; 1	Agree; 2	Undecided; 3	Disagree; 4	Strongly disagree; 5
(3) I have used the CPAP nightly for a long time	Strongly agree; 1	Agree; 2	Undecided; 3	Disagree; 4	Strongly disagree; 5
(4) It feels weird not to use the CPAP during a normal night	Strongly agree; 1	Agree; 2	Undecided; 3	Disagree; 4	Strongly disagree; 5
(5) I use the CPAP more or less automatically during a normal night	Strongly agree; 1	Agree; 2	Undecided; 3	Disagree; 4	Strongly disagree; 5