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Depends on how you fall, and at which speed. For a fall at low-to-moderate speed at a flattish surface a bike helmet can save you from quite a lot, while a helmet won't be of particular use if you get hit head on by a car at full speed.
60 percent of all motorcyle related deaths could be prevented by using sufficient headgear
Unless they break during intercourse.
The only way to make sure you don’t get pregnant is to not have inercourse. Every other way is not 100% effective.
skateboarders do not wear helmets, do to the fact that they know that they can avoid injury to the cranium
The birth control pill, if used correctly, has over a 98% chance of preventing pregnancy. Other methods with high efficacy in preventing pregnancy include the Depo-Provera injection as well as birth control implants and IUDs. However, the most effective form of birth control is abstinence.
The effective tax rate of Starbucks in the U.S. is about 32 percent.
That's a stupid question to ask; why don't you just Bing it?
The BCG vaccine is given to prevent tuberculosis. This vaccine is anywhere between 0 percent and 80 percent effective in preventing tuberculosis.
It is 14.9 percent.
Hepatitis B vaccine is safe and effective on 50 percent of all patients who are vaccinated.
100% alcohol is more effective because of the more alcohol concentration in the drink.