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Quality of Life, Functioning, and Depressive Symptom Severity in Older Adults With Major Depressive Disorder Treated With Citalopram in the STAR*D Study

J Clin Psychiatry 2017;78(7):897–903
10.4088/JCP.16m11335

Objective: Major depressive disorder (MDD) can substantially worsen patient-reported quality of life (QOL) and functioning. Prior studies have examined the role of age in MDD by comparing depressive symptom severity or remission rates between younger and older adults. This study examines these outcomes before and after SSRI treatment. On the basis of prior research, we hypothesized that older adults would have worse treatment outcomes in QOL, functioning, and depressive symptom severity and that nonremitters would have worse outcomes.

Methods: A retrospective secondary data analysis was conducted from the National Institute of Mental Health–funded Sequenced Treatment Alternatives to Relieve Depression (STAR*D) study (July 2001–September 2006). We analyzed data for 2,280 nonpsychotic adults with DSM-IV-TR–defined MDD who received citalopram monotherapy. Older adults were classified as adults aged 65 years and above. All subjects completed patient-reported QOL, functioning, and depressive symptom severity measures at entry and exit. Subjects included 106 older adults and 2,174 adults < 65. MDD remission status posttreatment was also determined.

Results: Both older adults and adults < 65 experienced significant improvements and medium to large treatment responses across QOL, functioning, and depressive symptom severity (P < .001). Older adults had smaller treatment effect sizes for all outcomes, particularly functioning. Conversely, mean change scores from entry to exit were equivalent across all outcomes. Remitters at exit had significantly better responses to treatment than nonremitters for the majority of outcomes.

Conclusion: Findings suggest that older adults and younger adults have comparable treatment responses to citalopram monotherapy, with significant improvements in patient-reported depressive symptom severity, functioning, and QOL.

Trial Registration: ClinicalTrials.gov identifier: NCT00021528