1 Montreal Behavioural Medicine Centre, CIUSSS du Nord-de-l'Île-de-Montréal, Montreal, Quebec, Canada.
2 Department of Psychology, Concordia University, Montreal, Quebec, Canada.
3 School of Physical and Occupational Therapy, McGill University, Montreal, Quebec, Canada.
4 Centre for Outcomes Research and Evaluation, McGill University Health Center-Research Institute, Montreal, Quebec, Canada.
5 Department of Psychology, University of Quebec at Montréal, Montreal, Quebec, Canada.
6 Department of Health, Kinesiology, and Applied Physiology, Concordia University, Montreal, Quebec, Canada.

CONCLUSIONS: Depressive symptom scores reduced substantially following surgery; comparable decreases occurred 6 through 24 months after surgery. These findings can help inform practitioners of the typical evolution of depressive symptoms following surgery and where deviations from this may require additional intervention.