Telephone-delivered behavioral intervention among blacks with sleep apnea and metabolic syndrome: study protocol for a randomized controlled trial

Table 2 Schedule to acquire study data

Outcome measures	Baseline	First follow-up^a	Second follow-up
Sociodemographic and clinical variables	X
Apnea-risk evaluation system questionnaire	X
Epworth sleepiness scale		X	X
CES-D	X	X
Apnea knowledge test	X	X
Apnea beliefs scale	X	X
Medical outcomes study short form 36	X
Self-efficacy scale	X	X
Change assessment scale	X
Functional outcomes in sleep questionnaire	X	X
Process variables	X	X
Post hoc evaluation variables			X
Sleep variables (chart audit)		X

^aFollow-up outcome ascertainment is performed by the Data Manager at 6 months post-enrollment and at 6 months post-telephone intervention (TTI).

ISSN: 1745-6215