Figure 2. Mendelian Randomization Estimates for the Association of Morning Diurnal Preference With Major Depressive Disorder.
The x-axis shows the odds ratio for the association of genetically proxied morning diurnal preference with depression, scaled to a 1-hour earlier sleep midpoint. Bars represent 95% CIs. GWAS indicates genome-wide association studies; ICD, International Classification of Diseases, Ninth and Tenth Revisions; PGC, Psychiatric Genomics Consortium; UKB, UK Biobank.