title: Treatment of premenstrual dysphoric disorder with a new drospirenone-containing oral contraceptive formulation.
abstract: OBJECTIVE
  This multicenter, double-blind, placebo-controlled crossover study evaluated the efficacy of a new oral contraceptive (OC) formulation containing drospirenone 3 mg and ethinyl estradiol (EE) 20 mug in treating symptoms of premenstrual dysphoric disorder (PMDD).
  
  
  METHODS
  The OC formulation or placebo was administered for 24 days in a 28-day cycle (24/4), rather than the usual 21-day active treatment, 7-day inert-pill regimen. Participants (N=64) were randomized to either study treatment for three cycles and then after a washout period of one treatment-free cycle switched to the alternate treatment.
  
  
  RESULTS
  The mean decrease from baseline for total Daily Record of Severity of Problems (DRSP) scores while using drospirenone/EE was significantly greater than for placebo (-12.47, 95% CI=-18.28, -6.66; p<.001). A positive response (i.e., a score of 1 or 2 in the Clinical Global Impressions-Improvement scale) occurred in 61.7% and 31.8% of subjects while taking drospirenone/EE and placebo, respectively (p=.009).
  
  
  CONCLUSIONS
  Drospirenone/EE, given in a 24/4 regimen, was superior to placebo for improving symptoms associated with PMDD.
authors.affiliation: Department of Psychiatry and Human Behavior, Brown Medical School, Providence, RI 02905, USA. teri_pearlstein@brown.edu
authors.forename: Teri B
authors.initials: TB
authors.lastname: Pearlstein
authors.forename: Gloria A
authors.initials: GA
authors.lastname: Bachmann
authors.forename: Howard A
authors.initials: HA
authors.lastname: Zacur
authors.forename: Kimberly A
authors.initials: KA
authors.lastname: Yonkers
mesh_terms: D000328:Adult; D000736:Androstenes / Q000008:administration & dosage* / Q000009:adverse effects; D003276:Contraceptives, Oral / Q000008:administration & dosage*; D018592:Cross-Over Studies; D004311:Double-Blind Method; D004997:Ethinyl Estradiol / Q000008:administration & dosage; D005260:Female; D006801:Humans; D010919:Placebos; D011293:Premenstrual Syndrome / Q000188:drug therapy*
chemical_list: D000736:Androstenes; D003276:Contraceptives, Oral; D010919:Placebos; D004997:Ethinyl Estradiol; C035144:drospirenone