Question: is 14 mm endometrial thickness normal?
Answer: Endometrial thickness of 14 mm or greater was associated with atypical hyperplasia (odds ratio [OR], 4.29; P = . 02), with a negative predictive value of 98.3%. A thickness of 15 mm or greater was associated with carcinoma (OR, 4.53; P = . 03), with a negative predictive value of 98.5%.