Definition , Prevalence & Etiology
Definition
Contraceptive methods focusing on sterilisation and barrier methods, including spermicides
Prevalence
• Failure rates:
o Vasectomy: 0.05% (1 in 2000)
o Tubal occlusion: 0.5% (1 in 200)
Etiology
• Sterilisation: Permanent surgical intervention
• Barrier methods: Physical/chemical prevention of conception