Social & Preventive Medicine If a woman experiences 2.5 accidental pregnancies after using a contraceptive method, Pearl index: A 0.1 per 100 woman years B 100 per 1000 woman years C 10 accidental pregnancies per 1000 woman years using contraceptives D 10 accidental pregnancies per 100 woman years using contraceptives 💡 Explanation If a woman experiences 2.5 accidental pregnancies after using a contraceptive method, Pearl index: ✓ Correct Answer: D. 10 accidental pregnancies per 100 woman years using contraceptives