Table 2.
Construct Evaluated, Measures, and Visit
| Construct | Measure | Visit |
|---|---|---|
| OSA presence and severity | ApneaLinkPlus®* | Assessment 1 |
| Glucose control-last 3 months | HbA1C | Assessment 1,2,3,4,5 |
| Glucose control- last 2 weeks | Fructosamine | Assessment 1,2,3,4,5 |
| Lipid profile | Total cholesterol, HDL, LDL & triglycerides | Assessment 1,2,3,4,5 |
| Demographic information | Sociodemographic and Lifestyle Questionnaire.50 | Assessment 1 |
| Health history | Health History Questionnaire* | Assessment 1 |
| Health literacy | Newest Vital Sign49 | Assessment 1 |
| Participant blinding to CPAP/sham-CPAP | “Guess” questionnaire | Assessment 3 |
| Physical activity | BodyMedia SenseWear Pro Armband®* | Assessment 1,2,3,4,5 |
| Diabetes self-management behaviors | Summary of Diabetes Self-Care Activities (SDSCA)42* | Assessment 1,2,3,4,5 |
| Diabetes distress | Problem Areas in Diabetes (PAID)48* | Assessment 1,2,3,4,5 |
| Diabetes knowledge | Diabetes Knowledge Test (DKT)43 | Assessment 1 & 3 |
| Diabetes self-efficacy | Diabetes Empowerment Scale-Short Form44* | Assessment 1,2,3,4,5 |
| Diet behavior | Rapid Eating & Activity Assessment for Pts. (REAP)45 | Assessment 1,2,3,4,5 |
| Eating habits and diet composition | Connor Diet Habit Survey (Connor DHS)46* | Assessment 1,2,3,4,5 |
| Overweight/obesity | BMI/ Body Composition | Assessment 1,2,3,4,5 |
| Mood disturbance | Profile of Mood States (POMS)47 | Assessment 1,2,3,4,5 |
| Physical and mental health-related quality of life | SF-12v2 Health Survey51* | Assessment 1,2,3,4,5 |
| Sleep quality | The Pittsburgh Sleep Quality Index (PSQI)35* | Assessment 1,2,3,4,5 |
| Daytime sleepiness | Epworth Sleepiness Scale (ESS)36,52* | Assessment 1,2,3,4,5 |
| Insomnia symptoms | Insomnia Severity Index (ISI)37,38* | Assessment 1,2,3,4,5 |
| Functional outcomes that are sensitive to sleepiness | Functional Outcomes of Sleep Quality (FOSQ)39* | Assessment 1,2,3,4,5 |
| Daily sleep habits/behavior | Consensus Sleep Diary32 (modified)* | Assessment 1,2,3,4,5 |
| State sleepiness | Stanford Sleepiness Scale.40 | Pre/post diabetes education |
| Ability to maintain vigilance | Brief Psychomotor Vigilance Test (PVT-B).41 | Pre/post diabetes education |
OSA= obstructive sleep apnea, BMI= body mass index kg/m2
*
Completed at home