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Author Question: A test can be valid without being reliable, but it cannot be reliable without being valid. ... (Read 68 times) |
In the ancient and medieval periods, dysentery killed about ? of all babies before they reach 12 months of age. The disease was transferred through contaminated drinking water, because there was no way to adequately dispose of sewage, which contaminated the water.
All adults should have their cholesterol levels checked once every 5 years. During 2009–2010, 69.4% of Americans age 20 and older reported having their cholesterol checked within the last five years.
The term pharmacology is derived from the Greek words pharmakon("claim, medicine, poison, or remedy") and logos ("study").
Aspirin is the most widely used drug in the world. It has even been recognized as such by the Guinness Book of World Records.
Asthma cases in Americans are about 75% higher today than they were in 1980.