[Natural Family Planning methods and Barrier: CNGOF Contraception Guidelines]

Area of Science:

• Reproductive Health
• Contraception

Background:

• Natural contraceptive methods, including fertility awareness-based methods, lactational amenorrhea method (LAM), and withdrawal, have low and stable prevalence.
• Barrier methods encompass male and female condoms, diaphragms, cervical caps, and spermicides, offering protection against pregnancy and sexually transmitted diseases (STDs).

Purpose of the Study:

• To develop clinical practice recommendations for natural contraception and female and male barrier methods.
• To evaluate the safety and effectiveness of various natural and barrier contraceptive methods.

Main Methods:

• A systematic review of English and French literature was conducted.
• Databases searched included PubMed and Cochrane Library, alongside guidelines from international scientific societies, the World Health Organization (WHO), and the Center for Disease Control and Prevention (CDC).

Main Results:

• Natural methods have pregnancy rates from 0.4% to 5% with perfect use, increasing to 8% in common practice.
• Barrier methods like condoms have pregnancy rates between 5-26% with correct use, and 20-32% with typical use.
• LAM is highly effective (98%) if specific conditions are met; withdrawal is less effective and constraining.

Conclusions:

• Natural and barrier methods are less effective and more constraining than modern contraceptives but can serve as alternatives.
• Informed use, understanding disadvantages, and potential failures are crucial for individuals or couples choosing these methods.
• Emergency contraception should be considered after unprotected intercourse.