contraceptives 1

When comparing COC’s to the contraceptive patch and vaginal ring, which of the following statements by the nurse practitioner is correct?

Answer choices:

1. The ring, patch, and COC’s have the same theoretical efficacy

2. The vaginal ring offers more oppurtunity for user error

3. The patch has lower failure rates in obese women

4. COC’s have fewer variety of formulations

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