Tabitha Is Convinced That Vaccines Cause Autism Because Her Friend's

question 40

Short Answer

Tabitha is convinced that vaccines cause autism because her friend's child was diagnosed with autism only a week after being vaccinated. Because Tabitha's "evidence" is essentially a story about one person, it should be considered _________________ and cannot be considered reliable.

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Definitions:

Mortality Rate

A measure of the number of deaths in a particular population, scaled to the size of that population, per unit of time.

Total Death Rate

The number of deaths per year per 1,000 people in a population, which is a basic demographic indicator of the level of mortality in a community or society.

Sex Ratio

The demographic concept expressing the number of males per hundred females in a given population.

Life Expectancy

The average period that an individual is expected to live, based on statistical measures of mortality patterns.