Table 3.

Measures

Variables	Measures	Frequency
Demographic and health information, caffeine, and sleep aid use	Demographic, health questionnaire, hypoglycemia unawareness, Clark Scale [63], menopausal status (STRAW+10 in women≥40 years) [64], caffeine, sleep aid use	Week 0
Primary measures: Objective sleep indices Glycemic indices  Glycemic control  Glycemic variability	Sleep duration, sleep variability, sleep and wake timing (Respironics Actiwatch Spectrum Plus®). Confirmed with sleep diary (bedtime, disruptions, wake time). A1C CGM (Abbott Libre® or Dexcom®): glucose variability, coefficient of variation (CV%), time-in-range [65, 66]	Weeks 0, 6, 12, 24
Secondary measures:		Weeks 0, 6, 12, 24
Diabetes distress  Diabetes self-management  Quality of life  Fatigue  Depressed mood   Subjective sleep quality	T1D Diabetes Distress Scale [67] Self-Management Questionnaire-R [68] Diabetes Quality of Life Scale (DQOL) [69] PROMIS Fatigue Scale [70] Center for Epidemiological Studies Depression Scale (CES-D) [71] Pittsburgh Sleep Quality Index [72]
Important patient-related variables	Self-Efficacy for Diabetes Scale [73], General Anxiety Disorder – 7-item (GAD-7) [74], Hypoglycemia Fear Scale II [75], Epworth Sleepiness Scale [76], activity counts	Weeks 0, 6, 12, 24
Participant engagement	Number of sessions attended, length of coaching sessions, lessons viewed, Fitbit usage	Weeks 1–12