Cyproterone acetate/ethinylestradiol | Drospirenone/ethinylestradiol | |||||||
---|---|---|---|---|---|---|---|---|
Characteristic | 2002 | 2010 | 2002 | 2010 | ||||
Naïve | Non-naïve | Naïve | Non-naïve | Naïve | Non-naïve | Naïve | Non-naïve | |
679 (42.6) | 916 (57.4) | 797 (49.8) | 802 (50.2) | 95 (9.4) | 914 (90.6) | 649 (19.2) | 2724 (80.8) | |
Mean age (years) (95% CI) | 20.7 (20.2–21.3) | 25.5 (25.0–26.0) | 18.2* (17.8–18.6) | 23.3* (22.9–23.8) | 23.4 (21.7–25.2) | 27.6 (27.1–28.1) | 18.7* (18.3–19.2) | 24.3* (24.0–24.6) |
Age at prescription (years) | ||||||||
12–19 | 450 (66.3) | 236 (25.8) | 618 (77.5) | 292 (36.4) | 46 (48.4) | 155 (17.0) | 498 (76.7) | 894 (32.8) |
20–29 | 111 (16.3) | 389 (42.5) | 137 (17.2) | 363 (45.3) | 23 (24.2) | 396 (43.3) | 111 (17.1) | 1198 (44.0) |
30–39 | 96 (14.1) | 262 (28.6) | 33 (4.1) | 127 (15.8) | 22 (23.2) | 300 (32.8) | 26 (4.0) | 521 (19.1) |
40–49 | 22 (3.2) | 29 (3.2) | 9 (1.1) | 20 (2.5) | 4 (4.2) | 63 (6.9) | 14 (2.2) | 111 (4.1) |
Levonorgestrel/ethinylestradiol | ||||
---|---|---|---|---|
Characteristic | 2002 | 2010 | ||
Naïve | Non-naïve | Naïve | Non-naïve | |
3946 (70.1) | 1686 (29.9) | 7157 (74.3) | 2476 (25.7) | |
Mean age (years) (95% CI) | 20.7 (20.4–20.9) | 27.3 (27.0–27.7) | 18.1* (18.0–18.2) | 24.9* (24.5–25.2) |
Age at prescription (years) | ||||
12–19 | 2616 (66.3) | 384 (22.8) | 5759 (80.5) | 926 (37.4) |
20–29 | 713 (18.1) | 619 (36.7) | 1028 (14.4) | 816 (33.0) |
30–39 | 462 (11.7) | 542 (32.1) | 261 (3.6) | 552 (22.3) |
40–49 | 155 (3.9) | 141 (8.4) | 109 (1.5) | 182 (7.4) |
*p<0.0001 vs 2002.
Data are n (%) unless stated otherwise.
CI, confidence interval.