The Copper-T 380A intrauterine device has a failure rate (Pearl Index) of approximately:
- A 0.1–0.5 per 100 woman-years (highly effective) ✓
- B 2–3 per 100 woman-years
- C 5–8 per 100 woman-years
- D 10–15 per 100 woman-years
Correct answer: A. 0.1–0.5 per 100 woman-years (highly effective)
Explanation
The Copper-T 380A (CuT380A) has a Pearl Index of approximately 0.1–0.8 per 100 woman-years, making it one of the most effective reversible contraceptives available. It can remain in situ for up to 10–12 years. It works primarily by copper-mediated spermicidal effect and alteration of uterine/tubal motility. Condoms have a typical-use Pearl Index of 12–15.
Reference: Park's Textbook of Preventive and Social Medicine, 27th ed.
High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP
Written and medically reviewed by the StethoPrep medical team.