Exploratory outcome measures
Within-group comparisons comparing baseline to 10 weeks and 16 weeks were done for the MBSI-I and SH cohorts. At the end of the randomized phase, participants in the sleep hygiene group were offered the same MBSI-I training and analyzed as a group, the expanded MBSI-I cohort (eMBSI-I). The eMBSI-I outcomes analyses included data from the original MBSI-I cohort as well as the crossover SH participants. Within-group and between group (SH) analyses were performed for the eMBSI-I cohort at the same time points.