| Variation in clinical decisions |
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| n | Variation in
medical practice has been |
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| studied for two
decades |
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| n | Led to
investigations of |
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| – | under- and
over-utilization of medical care |
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| procedures |
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| – | And of the
evidence for the effectiveness of |
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| some treatments |
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| n | This course of
inquiry has begun to mature |
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| with the develop
of methods to designed to |
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| improve clinical
decision making, such as |
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| practice
guidelines |
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| 5 |