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Life expectancy (LE) is the expected (in the statistical sense) number of years of life remaining at a given medical devices age. It is denoted by the average number of subsequent years of life for a device now aged x, according to experience.

## Calculate LE

Lets take for example that a piece of medical equipment is purchased for 1,000,000 and depreciates at a rate of \$150,000 per year, what is the estimated life expectancy (in years).

An example...
$1,500,000 / 150,000 = 10 (years)$