hard · LSAT
A pharmaceutical company reports that patients who took its new sleep aid fell asleep an average of 15 minutes faster than patients given no treatment at all. The company concludes that its sleep aid is an effective treatment for insomnia and should be widely prescribed.
Which one of the following, if true, most seriously undermines the company's conclusion?
- Patients given an inert placebo pill in the same study fell asleep, on average, just as much faster than the untreated group as the patients given the actual sleep aid did.
- The sleep aid is somewhat more expensive than several competing medications already on the market.
- The sleep aid is wholly incapable of helping anyone with any sleep difficulty whatsoever.
- Patients taking the sleep aid reported waking up more refreshed than they had in years.
- Insomnia affects a larger share of the adult population than it did a decade ago.
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