Table 1.

Assessment Measures.

Description of Measure	Source	Timeline for Collection	Cronbach’s Alpha/Validity & Reliability
Adverse Childhood Experiences Questionnaire for Adults	[33]	Pre-intervention (to determine ACE scores of participants)	Chronbach’s alpha: 0.88 Reliability: 0.71
PTSD Checklist for DSM-5 (PCL-5)	[34]	Pre- and post-intervention	Chronbach’s alpha: 0.97 Reliability: 0.82
Generalized Anxiety Disorder Scale (GAD-7)	[35]	Pre- and post-intervention	Cronbach’s alpha: 0.79–0.91 Reliability = 0.85
PROMIS Adult Short Form for Sleep Disturbances	[36]	Pre- and post-intervention	Chronbach’s alpha: 0.86 Validity: r = 0.05–0.6
Patient Health Questionnaire for Depressive Symptomology (PHQ-9)	[37]	Pre- and post-intervention	Chronbach’s alpha = 0.835 Reliability = 0.875 Validity = 89.5%
Connor-Davidson Resilience Scale (CD-RISC)	[38]	Pre- and post-intervention	Chronbach’s alpha = 0.94 Reliability = 0.96
Professional Quality of Life Index (Pro-QOL)	[39]	Pre- and post-intervention	Cronbach’s alpha: 0.90 Reliability = 0.80–0.90
Teachers’ Sense of Self-Efficacy (Short Form)	[40]	Pre- and post-intervention	Cronbach’s alpha: 0.90 Reliability = 0.74
Cortisol salivary assays	Salimetrics Laboratories	Pre (beginning of week 1)-, mid- (week 3) and post-intervention (end of week 6)	Mean accuracy of salivary cortisol testing > 90%
Heart rate variability data	HeartMath Institute (Em Wave Pro Plus Software and the HeartMath Inner Balance PPG sensor)	Pre- (1 week prior to intervention to establish a baseline), mid- (week 3) and post-intervention (at conclusion of week 6)	Pearson correlation between electrocardiogram (ECG) and ear clip pulse plethysmograph (PPG) device (Em Wave Pro Plus) mean resting baseline = 0.997, p < 0.01; RMSSD Pearson correlation = 0.958, p < 0.01