Incidence of SAD (SIGH‐SAD score ≥ 20) ( · All participants were known SAD patients who had been successfully treated with conventional light therapy in previous winters
It is very uncertain whether bright white light therapy changes incidence of SAD (SIGH‐SAD score ≥ 20) ( compared with no light therapy (very low certainty).
1 finding from 1 review
Incidence of SAD (SIGH‐SAD score ≥ 20) ( · All participants were known SAD patients who had been successfully treated with conventional light therapy in previous winters
It is very uncertain whether bright white light therapy changes incidence of SAD (SIGH‐SAD score ≥ 20) ( compared with infrared light therapy (very low certainty).
1 finding from 1 review
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 winters
It is very uncertain whether bright white light therapy changes incidence of severe SAD (SIGH‐SAD‐SR (≥ 40)) ( compared with infrared light therapy (very low certainty).
1 finding from 1 review
Overall discontinuation ( · All participants were known SAD patients who had been successfully treated with conventional light therapy in previous winters
It is very uncertain whether bright white light therapy changes overall discontinuation ( compared with infrared light therapy (very low certainty).
1 finding from 1 review
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 winters
It is very uncertain whether bright white light therapy changes incidence of severe SAD (SIGH‐SAD‐SR (≥ 40)) ( compared with no light therapy (very low certainty).
1 finding from 1 review
Overall discontinuation ( · All participants were known SAD patients who had been successfully treated with conventional light therapy in previous winters
It is very uncertain whether bright white light therapy changes overall discontinuation ( compared with no light therapy (very low certainty).
1 finding from 1 review