The proposed study is an open-label trial of Re-Timer® wearable morning bright light therapy for postpartum depression. The study is focused on evaluating the feasibility, acceptability, and implementation context of morning Bright Light Treatment (mBLT) for postpartum depression.
≤ 6 months postpartum
EPDS score >10
Current or past-year substance use disorder
Lifetime history of bipolar disorder or psychotic disorder
Active suicidal intent
Retinal pathology or history of eye surgery
Single group
Light therapy
DeviceParticipants will use the Re-Timer daily for 5 weeks (approximately 35 days). All participants will be provided with a "light therapy window" during which they will wear the device for 60 mins.
Retention rate
Number of participants who enrolled/number of participants who completed trial ( ≥70% acceptable)
Adherence rate (as assessed through self-report)
Percent of participants who completed ≥70% light therapy intervention sessions
Client Satisfaction Scale (CSS) score
The Client Satisfaction Scale measures satisfaction with the treatment. Total scores range from 5-20; higher total scores indicate greater treatment satisfaction.
Treatment Satisfaction Scale (TSS) score
The Treatment Satisfaction Scale measures the acceptability of the treatment. Total scores range from 2 to 20 ; higher scores indicate greater treatment acceptability.
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University of Michigan
Lead sponsor
American Academy of Sleep Medicine
Collaborator
