Studies // Cited work
Insomnia as a predictor of depression: A meta-analytic evaluation of longitudinal epidemiological studies
Baglioni, C., Battagliese, G., Feige, B., Spiegelhalder, K., Nissen, C., Voderholzer, U., Lombardo, C., & Riemann, D. (2011). Insomnia as a predictor of depression: A meta-analytic evaluation of longitudinal epidemiological studies.
Level C Meta-analysis doi:10.1016/j.jad.2011.01.011
What this study supports
Supports the claim that insomnia at baseline was associated with about twice the odds of later depression (random-effects OR 2.60; fixed-effects OR 2.10 after removing outliers). Observational cohorts that did not always adjust for intervening variables.
- Who was studied
- 21 longitudinal epidemiological studies of insomnia complaints and later depression.
- Design
- Meta-analysis
- Level of evidence
- Longitudinal and repeated-measures studies without random assignment.
Claims that rest on it
Each claim states what the site asserts, at what strength, and with what caveat.
EmpiricalLevel CConfidence MODERATE
In longitudinal epidemiological studies, insomnia in people without depression was associated with about twice the odds of developing depression later.
- Scope
- Cohorts followed from baseline insomnia complaints to later depression.
- Caveat
- Observational; insomnia may be an early sign of depression or share causes with it, and not all studies adjusted for intervening variables.
Last reviewed · Review due · insomnia-associated-with-later-depression