Table 2:

Use of oral contraceptives and other acne medications before and during isotretinoin treatment

Other medication useProvince; no. (%) of participants
British Columbia
n = 37 285
Saskatchewan
n = 10 890
Manitoba
n = 6 741
Ontario
n = 4 355
During isotretinoin therapy
Oral contraceptives11 378 (30.5)2 651 (24.3)2 219 (32.9)1 183 (27.2)
Other acne medications11 020 (29.6)1 332 (12.2)1 407 (20.9)891 (20.5)
In 12 mo before isotretinoin therapy
Oral contraceptives13 398 (35.9)3 153 (29.0)2 268 (33.6)1 233 (28.3)
Other acne medications26 863 (72.0)6 606 (60.7)4 283 (63.5)1 976 (45.4)