Summary of findings table ‐ Light therapy vs no light therapy: Incidence of severe SAD (SIGH‐SAD‐SR (≥ 40)) (
It is very uncertain whether light therapy changes incidence of severe SAD (SIGH‐SAD‐SR (≥ 40)) ( compared with no light therapy (very low certainty).
What each review found
Include earlier review versions| Finding | Effect | Studies | GRADE certainty |
|---|---|---|---|
Light therapy vs no light therapy Incidence of severe SAD (SIGH‐SAD‐SR (≥ 40)) ( · all participants were known SAD patients who had been successfully treated with conventional light therapy in previous… It is very uncertain whether light therapy changes incidence of severe SAD (SIGH‐SAD‐SR (≥ 40)) ( compared with no light therapy (very low certainty). Light therapy for preventing seasonal affective disorder (2019) · Cochrane Headline outcomes only | RR 0.21 [0.04, 1.05] | 1 study · 38 participants | Very low |
Findings are shown side by side, never pooled across reviews.
The reviews
| Review | Searched up to | Included studies | AMSTAR 2 |
|---|---|---|---|
| Light therapy for preventing seasonal affective disorder 2019 · Cochrane Headline outcomes only | Not reported | list not extracted yet | Not assessed |
Studies behind the findings
None of these reviews ties its included studies to this outcome in the data here. Cochrane reviews and reviews with headline outcomes only do not list their studies yet.
How reviews are matched to this question
Reviews word the same question differently. Four decision models (TypeSafe's Jev, Liquid AI's d1-ultra, SubQ Snap and Baseten's Elephant) judged each wording of the population, intervention, comparator and outcome against the others; two wordings count as the same when at least three of them agree and none clearly disagrees, and findings count as this question only when all four elements match. Timing, setting and subgroup never split a question: they are shown on each finding.