Skip to Main Content
Table 4.

Proportions of use of different types of oral contraceptives over time among controls who were recent oral contraceptive users

Reference year
1990–19941995–19992000–20042005–2009
OC typea%%%%
Low estrogen dose 6.4 19.5 19.2 23.8 
Moderate estrogen dose 91.5 81.7 82.8 78.2 
High estrogen dose 6.1 3.6 0.8 0.4 
Progestin types 
 Estrane progestin 83.6 80.8 71.2 62.2 
  Norethindrone 59.7 44.1 36.5 30.8 
  Norethindrone acetate 23.3 34.6 32.3 28.5 
  Ethynodiol diacetate 3.9 6.8 5.2 3.5 
 Gonane progestin 20.3 22.9 35.6 36.8 
  Levonorgestrel 15.8 17.4 16.9 19.9 
  Norgestimate 0.0 3.1 16.7 13.8 
  Norgestrel 4.6 2.3 1.3 1.4 
  Desogestrel 0.0 0.5 1.5 2.5 
Reference year
1990–19941995–19992000–20042005–2009
OC typea%%%%
Low estrogen dose 6.4 19.5 19.2 23.8 
Moderate estrogen dose 91.5 81.7 82.8 78.2 
High estrogen dose 6.1 3.6 0.8 0.4 
Progestin types 
 Estrane progestin 83.6 80.8 71.2 62.2 
  Norethindrone 59.7 44.1 36.5 30.8 
  Norethindrone acetate 23.3 34.6 32.3 28.5 
  Ethynodiol diacetate 3.9 6.8 5.2 3.5 
 Gonane progestin 20.3 22.9 35.6 36.8 
  Levonorgestrel 15.8 17.4 16.9 19.9 
  Norgestimate 0.0 3.1 16.7 13.8 
  Norgestrel 4.6 2.3 1.3 1.4 
  Desogestrel 0.0 0.5 1.5 2.5 

NOTE: Percent of controls filling at least one combined oral contraceptive script among recent oral contraceptive users by reference year. Recent use is defined as filling at least one combined oral contraceptive script in the year prior.

Abbreviation: OC, oral contraceptive.

aOral contraceptive types are not mutually exclusive. Low estrogen dose = 20 μg ethinyl estradiol, moderate estrogen dose = 30–35 μg ethinyl estradiol or 50 μg mestranol, and high estrogen dose = 50 μg ethinyl estradiol or 80 μg mestranol. Estrane progestins include norethindrone, norethindrone acetate, and ethynodiol diacetate. Gonane progestins include levonorgestrel, norgestimate, norgestrel, and desogestrel.

Close Modal

or Create an Account

Close Modal
Close Modal