The controversial use of employer drug testing to curb the costly erosion of human resources has been effective as the rate of positive test results declined by more than 72 percent over an 18 year period.

Question

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The statement says that employer drug testing has been effective in curbing erosion of human resources and that the rate of positive test results has declined by more than 72 percent over an 18-year period, implying that the statement is true.

The Controversial Use of Employer Drug Testing to Curb the Costly