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1.  Sex Differences in Response to Citalopram: A STAR*D Report 
Journal of psychiatric research  2008;43(5):503-511.
Objective
Controversy exists as to whether women with depression respond better to selective serotonin reuptake inhibitors (SSRIs) than men. The purpose of this report was to determine whether men and women differ in their responses to treatment with the SSRI citalopram using a large sample of real world patients from primary and psychiatric specialty care settings.
Method
As part of the Sequenced Treatment Alternatives to Relieve Depression (STAR*D) study, 2876 participants were treated with citalopram for up to 12-14 weeks. Baseline demographic and clinical characteristics and outcomes were gathered and compared between men and women.
Results
At baseline, women were younger, had more severe depressive symptoms and were more likely to have: early onset; previous suicide attempt(s); a family history of depression, alcohol abuse or drug abuse; atypical symptom features; and one or more of several concurrent psychiatric disorders. Despite greater baseline severity and more Axis I comorbidities, women were more likely to reach remission and response with citalopram than men.
Conclusions
Women have a better response to the SSRI citalopram than men, which may be due to sex-specific biological differences particularly in serotonergic systems.
doi:10.1016/j.jpsychires.2008.07.002
PMCID: PMC2681489  PMID: 18752809
antidepressants; gender differences; estradiol; women's health; depression
2.  Gender Differences in Depression Symptoms in Treatment-Seeking Adults: STAR*D Confirmatory Analyses 
Comprehensive psychiatry  2008;49(3):238-246.
Background
While epidemiologic research consistently reports greater prevalence of major depressive disorder in women, small sample sizes in many studies do not allow for full elaboration of illness characteristics. This paper examines gender differences in terms of illness attributes in a cohort of 2541 outpatients from across the United States who enrolled in the Sequenced Treatment Alternatives to Relieve Depression (STAR*D) study.
Method
Confirmatory analyses were performed in 2541 outpatients comparing men and women with regard to socio-demographic features, comorbid Axis I and Axis III conditions, and illness characteristics. Results were compared to those of our previous report on the initial population of the first 1500 individuals enrolled in STAR*D.
Results
In both samples, nearly two-thirds of the sample (62.5%) were women. Women had greater symptom severity, but men had more episodes of major depression, despite no difference in the length of illness. No differences in age of onset emerged. As in the first cohort, women showed greater rates of an anxiety disorder, bulimia and somatoform disorder, as well as more past suicide attempts, while men showed more alcohol and substance abuse. Women reported more appetite, weight, hypersomnia, interpersonal sensitivity, gastrointestinal and pain complaints, and less suicidal ideation. Irritability was equally common in men and women.
Conclusion
This large analysis confirmed most of the clinical features and co-morbidities found to be more prevalent in the first cohort of women. Additionally, this analysis corroborated previous research suggesting higher rates of atypical and anxious depression in women, but refuted the notion of an “irritable depression” found in men. The report confirmed the 1.7:1 ratio for depression seen across genders in the National Comorbidity Survey.
doi:10.1016/j.comppsych.2007.06.012
PMCID: PMC2759282  PMID: 18396182
Women; Depression; Prevalence; Gender

Results 1-2 (2)