The word proxy, as used in the passage, most nearly means ____.
Over the past few years, body mass index (BMI), a ratio of a person’s height and weight, has effectively become a proxy for whether a person is considered healthy. Many U.S. companies use their employees’ BMIs as a factor in determining workers’ health care costs. And people with higher BMIs could soon have to pay higher health insurance premiums, if a rule proposed in April by the Equal Employment Opportunity Commission is adopted. But a new study led by UCLA psychologists has found that using BMI to gauge health incorrectly labels more than 54 million Americans as “unhealthy,” even though they are not.
Retrieved from: http://esciencenews.com/articles/2016/02/04/dont.use.body.mass.index.determine.whether.people.are.healthy.ucla.led.study.says
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