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Nursing Research and Practice
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2012
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Article
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Tab 2
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Research Article
State-Granted Practice Authority: Do Nurse Practitioners Vote with Their Feet?
Table 2
Number and percent of states granting NPs controlled substance prescriptive authority.
Year
States
Percent
2003
45
88%
1999
37
73%
1995
29
57%
1991
15
30%