Explain the difference between "perfect use" and "typical use" of contraceptives,and define contraceptive failure rate and continuation rate.Choose two contraceptive methods,and describe what factors lead to the differences between typical-use effectiveness and perfect-use effectiveness.

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The Answer of Explain the difference between "perfect use" and "typical use" of contraceptives,and define contraceptive failure rate and continuation rate.Choose two contraceptive methods,and describe what factors lead to the differences between typical-use effectiveness and perfect-use effectiveness.

Explain the Difference Between "Perfect Use" and "Typical Use" of Contraceptives,and