Table 7 Incidence of withdrawal bleeding after treatment with EE/CMA or EE/DRSP

From: A comparison of combined oral contraceptives containing chlormadinone acetate versus drospirenone for the treatment of acne and dysmenorrhea: a randomized trial

  EE /CMA
n (%)
EE /DRSP
n (%)
Month 1 82 (91.1) 82 (93.2)
Month 3 84 (94.4) 82 (93.2)
Month 6 88 (98.9) 88 (98.9)
  1. Note: No significant difference between treatment groups