| Methods |
Allocation: randomized, 'balanced parallel design'.
Blinding: not stated.
Duration: 7 days (followed by one night of LPSD). |
| Participants |
Diagnosis: Depressive disorder. Major depression (N = 35). DSM‐IV.
Inclusion criteria: HDRS (21‐item) 15 or more.
N = 40.
Age: mean 53 years.
Sex: F 24, M 16.
Setting: inpatients. |
| Interventions |
1. Bright light (minimum 2500 lux in the morning for 2 hours). N = 20.
2. Dim light (100 lux in the morning for 2 hours). N = 20.
Device: light box. |
| Outcomes |
Mental state (AMS, HDRS, VAS). |
| Notes |
Light after LPSD of one night.
Pharmacotherapy unchanged.
Assesses LPSD respondents and nonrespondents separately. |
| Risk of bias |
| Bias |
Authors' judgement |
Support for judgement |
| Allocation concealment? |
Unclear risk |
B ‐ Unclear |
