@article{Bruijniks2020, abstract = {BackgroundIt is unclear what session frequency is most effective in cognitive–behavioural therapy (CBT) and interpersonal psychotherapy (IPT) for depression.AimsCompare the effects of once weekly and twice weekly sessions of CBT and IPT for depression.MethodWe conducted a multicentre randomised trial from November 2014 through December 2017. We recruited 200 adults with depression across nine specialised mental health centres in the Netherlands. This study used a 2 × 2 factorial design, randomising patients to once or twice weekly sessions of CBT or IPT over 16–24 weeks, up to a maximum of 20 sessions. Main outcome measures were depression severity, measured with the Beck Depression Inventory-II at baseline, before session 1, and 2 weeks, 1, 2, 3, 4, 5 and 6 months after start of the intervention. Intention-to-treat analyses were conducted.ResultsCompared with patients who received weekly sessions, patients who received twice weekly sessions showed a statistically significant decrease in depressive symptoms (estimated mean difference between weekly and twice weekly sessions at month 6: 3.85 points, difference in effect size d = 0.55), lower attrition rates (n = 16 compared with n = 32) and an increased rate of response (hazard ratio 1.48, 95% CI 1.00–2.18).ConclusionsIn clinical practice settings, delivery of twice weekly sessions of CBT and IPT for depression is a way to improve depression treatment outcomes.}, author = {Bruijniks, Sanne J. E. and Lemmens, Lotte H. J. M. and Hollon, Steven D. and Peeters, Frenk P. M. L. and Cuijpers, Pim and Arntz, Arnoud and Dingemanse, Pieter and Willems, Linda and van Oppen, Patricia and Twisk, Jos W. R. and van den Boogaard, Michael and Spijker, Jan and Bosmans, Judith and Huibers, Marcus J. H.}, doi = {10.1192/bjp.2019.265}, journal = {British Journal of Psychiatry}, month = {feb}, pages = {222-230}, title = {The effects of once- versus twice-weekly sessions on psychotherapy outcomes in depressed patients}, url = {https://oadoi.org/10.1192/bjp.2019.265}, volume = {216}, year = {2020} }