Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
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Women are two-thirds more likely than men to develop irritable bowel syndrome. This may be attributable to hormonal changes related to their menstrual cycles.
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Human kidneys will clean about 1 million gallons of blood in an average lifetime.
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By definition, when a medication is administered intravenously, its bioavailability is 100%.
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This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.
Wetlands in Canada
Avogadro's number calculation
Number of lower molar cusps is one of the features used to distinguish sundadonts from sinodonts.
Estimated Number of New Sexually Transmitted Infections
Average Number of Days per Year with Thunderstorms
Post-term birth rates, by province/territory, Canada