Correction to: Neuropsychopharmacology (2006) 31, 2505–2513. doi:10.1038/sj.npp.1301113

Following the publication of this article, the authors noted that in the abstract and in the next to last paragraph of the results section, a P-value for part of one of the post hoc analyses was incorrectly reported. A significant P-value was reported for both the difference in time to relapse and for relapse rates in a subgroup of patients fully non-responsive to citalopram monotherapy. Although the P-value for time to relapse was correctly reported, the correct P-value for the comparison of relapse rates is not significant (P=0.4; CMH test). This change does not alter the major findings of the study nor any of the conclusions of the report. We appreciate the assistance of a diligent reader in identifying this error.