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Post Partum Depression / Bright Light Therapy / Dim Light Therapy · Interventional Study
ClinicalTrials.gov · August 11, 2026
Early or partial results. Treat as a signal, not a conclusion.
This is a completed randomized trial of a wearable bright light device versus dim light control for postpartum depression, with planned primary outcome measurement on the Hamilton Depression Rating Scale at week 5. No results are posted in this registry record, so the efficacy, safety, or clinical utility of the intervention cannot be assessed from the information provided.
Interventional, Randomized, Parallel, Triple masking, Treatment purpose. Post Partum Depression; Female; age from 18 Years. Intervention: Bright Light Therapy. Compared with: Dim Light Therapy — Sham Comparator. n = 95. 1 site: United States.
This is a completed randomized trial of a wearable bright light device versus dim light control for postpartum depression, with planned primary outcome measurement on the Hamilton Depression Rating Scale at week 5. No results are posted in this registry record, so the efficacy, safety, or clinical utility of the intervention cannot be assessed from the information provided.
No results are reported in this registry record; efficacy, effect sizes, and safety outcomes are unknown.
If results demonstrate efficacy of wearable morning bright light therapy for postpartum depression, this non-pharmacological approach could offer an accessible option for treatment. However, the clinical significance and safety profile can only be judged once results are published and peer reviewed.
This is a completed but unpublished trial registry record with no results reported; the design is sound but results are essential to assess evidence strength.
As stated by the source record.
Quoted from the source exactly as published.
If results demonstrate efficacy of wearable morning bright light therapy for postpartum depression, this non-pharmacological approach could offer an accessible option for treatment. However, the clinical significance and safety profile can only be judged once results are published and peer reviewed.
Graded across the dimensions that decide whether you should act, each from what the source actually supports. There is no single score, and where a dimension was not assessed it says so.
What is missing. This record has no key findings. That is a gap in the analysis, not a judgement about the study.
Registry record from ClinicalTrials.gov (NCT04845347). This is a study registration, not published results. Lead sponsor: University of Michigan. Recruitment status: COMPLETED. Phase: NA. Study type: INTERVENTIONAL. Enrollment: 95 participants (ACTUAL). Conditions: Post Partum Depression. Interventions: DEVICE: Bright Light Therapy; DEVICE: Dim Light Therapy. Primary outcome measures: Hamilton Depression Rating Scale (HAM-D Total Score) at Week 5 , Post-treatment (approximately week 5). Brief summary: This study will test a consumer health light therapy device (Re-Timer) for women with postpartum depression to better understand how it affects mood and the body clock (also called the circadian clock). Eligible participants will be enrolled and randomized after baseline assessments. In addition to using the Re-Timer light for 5 weeks participants will complete questionnaires at various timepoints, record sleep information, wear an actigraph watch, and provide saliva samples. Additionally, the sleep of the participants' infants will also be monitored using an ankle-worn device (actigraph) and sleep diary at certain time-points as this may influence the mother's mood/sleep, and in turn affect the results. The hypotheses regarding the bright light versus the placebo dim light of the study are: * morning bright light therapy will produce greater improvement from pre- to post-treatment on the Hamilton Rating Scale for Depression * morning bright light therapy will lengthen the Phase angle difference (PAD) and this will mediate change in depression symptoms. * morning bright light therapy will produce greater improvements on self-reported depression symptoms, excessive daytime sleepiness, maternal-infant bonding, social functioning, and sleep-related impairment from pre- to post-treatment.
Taken from the source record, never inferred. Follow any of these and new work involving them reaches your briefing.