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. 2011 Nov 9;2011(11):CD003553. doi: 10.1002/14651858.CD003553.pub3

Bayer 2011.

Trial name or title Cycle Control and Safety of E2‐DRSP
Methods Randomized, double‐blind, multicenter
Participants 600 healthy women, 18 to 35 years
Interventions 6 different regimens of drospirenone and ethinyl estradiol (including monophasic and triphasic) over 7 cycles (details not provided)
Outcomes include bleeding patterns and cycle control
Starting date March 2008
Contact information Bayer Study Director (no more information provided)
Notes Completed June 2009. No report found; searched PubMed and http://www.clinicalstudyresults.org/