| 1 | A | B | C | D |
| --- | --- | --- | --- | --- |
| 2 | percentage distribution of oral contraceptives used, by estrogen and progestin type, women aged 15 to 49, household, canada, 2007 to 2011 |  |  |  |
| 3 | estrogen/progestin type | % | 95% confidence interval |  |
| 4 |  |  | from | to |
| 5 | total | 100.00 | .. | .. |
| 6 | ethinylestradiol/levonorgestrel | 28.5 | 22.7 | 35.2 |
| 7 | ethinylestradiol/norgestimate | 27.2 | 22.7 | 32.1 |
| 8 | ethinylestradiol/desogestrel | 17.3 | 12.1 | 24.1 |
| 9 | ethinylestradiol/drospirenone | 16.1 | 9.9 | 25.3 |
| 10 | other | 10.9 | 7.4 | 15.7 |

Question: what was the proportion of participants that took ocs containing ee in combination with levonorgestrel or norgestimate?
Answer: 55.7

Question: what was the proportion of oc users that took desogestrel-containing formulations?
Answer: 17.3

Question: what was the proportion of oc users that took drospirenone-containing formulations?
Answer: 16.1