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Author Question: The D statistic in item analysis is a measure of a) item difficulty b) item discrimination c) ... (Read 145 times) |
Astigmatism is the most common vision problem. It may accompany nearsightedness or farsightedness. It is usually caused by an irregularly shaped cornea, but sometimes it is the result of an irregularly shaped lens. Either type can be corrected by eyeglasses, contact lenses, or refractive surgery.
When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.
More than 150,000 Americans killed by cardiovascular disease are younger than the age of 65 years.
Carbamazepine can interfere with the results of home pregnancy tests. If you are taking carbamazepine, do not try to test for pregnancy at home.
After 5 years of being diagnosed with rheumatoid arthritis, one every three patients will no longer be able to work.