How effective is birth control?

Researchers measure how well a birth control method works in two ways: - perfect-use and typical-use.
Researchers measure how well a birth control method works in two ways: perfect-use and typical-use.

What is the best and most effective form of birth control available today? - Quora

Everything You Need to Know About Birth Control Pills

How Effective Is The Birth Control Pill?

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How Effective Is Birth Control? Chart with Pill, Shot, Patch, IUD

Ask a Doctor: What should I know about birth control pills?

How Effective Is Birth Control at Preventing Pregnancy?

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Birth Control Effectiveness. What Method Works Best?

Nonhormonal birth control: All the options - Flo

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