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==How did THAT happen?== I have a friend whose husband did not want any children at all. So she took the Birth Control pill and he used condoms every single time they had sex. Well, they had two children, a boy and a girl. She said that she has no idea how that happend, but it did. A paternity test might offer a clue. ==General answer== If you know the failure rates for both methods you can calculate the failure rate for combining them, theoretically. Let's say Method A is 90 percent effective. That means that ten percent of the women using the method will get pregnant in any one year. Let's say Method B is only 80 percent effective, so its failure rate is 20 percent per year. The failure rate of both methods employed together, however, is the product of the failure rates, 0.1 x 0.2, or 0.02. Subtract that from one, and you get the effectiveness of the combination: 0.98. Pretty darn impressive. Of course, this assumes that the methods are compatible. Some non-latex condoms are not compatible with spermicides, so using them together could increase the failure rate.

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โˆ™ 2008-08-01 07:03:11
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Q: What is the failure rate of using both condoms and birth control pills?
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Related questions

What is more effective in preventing pregnancy condoms or birth control pills?

Birth control pills are like 99.8% effective if taken properly and condoms are closer to 97%.

Which one works the best condoms or birth pills?

Birth control pills if taken according to instructions.

Birth control methods?

Condoms, IUDs, spermicidal sprays, celibacy, pills.

How do you remove poverty?

Pass out Condoms or Birth Control pills instead of food.

What are some different forms of birth control?

Some different forms of birth control includes birth control pills, morning-after pills, condoms, diaphragms, vasectomy for men, and sterilization for women.

Do all birth control pills protect you against chlamydia?

Absolutley not! The two things that do are: no sex or condoms. Birth control pills control the births of babies, nothing more.

How can avoid a pregnancy?

Avoiding sex :) or using contraceptives; birth control pills or condoms.

Do i still have to take birth control pills if we use a condom?

It is always good to use a backup method of birth control, even when using condoms. Condoms are the only form of birth control that also protects against STDs.

Is there any birth control options?

There are many birth control methods aside from traditional birth control pills. Some of those include: Condoms, IUD, Nuva Ring, Depo-Provera, FemCap, Diaphram, and Female Condoms.

Do you have to take the birth control pill if you use a condom?

If you use condoms you do not need to take birth control pills, because the condoms stop you from getting pregnant by stopping the sperm from entering your system.

What anti pregnancy kit does?

The anti-pregnancy kit will help a woman not to get pregnant. The kit has birth control pills, the day after pills, and condoms.

Does penicillin vk effect birth control pills effectiveness?

Birth ontrol pills may not work as well while you are using Penicillin-VK . To prevent pregnancy, use an extra form of birth control (eg, condoms).

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