Table A1.

Categorization of 50 States and the District of Columbia by NP Scope of Practice.

Binary scope of practice variablea	Three-category scope of practiceb	State
Full scope of  practice	“Independent practice and prescriptions”	Alaska Arizona Colorado District of Columbia Hawaii Idaho Iowa	Maine Montana New Hampshire New Mexico Oregon Washington Wyoming
Without full scope  of practice	“Independent practice  but requiring  supervision for  prescriptions”	Arkansas Indiana Kentucky Maryland Michigan New Jersey	North Dakota Oklahoma Rhode Island Tennessee Utah West Virginia
	“Requiring physician  supervision for  practice and  prescriptions”	Alabama California Connecticut Delaware Florida Georgia Illinois Kansas Louisiana Massachusetts Minnesota Mississippi	Missouri Nebraska Nevada New York North Carolina Ohio Pennsylvania South Carolina South Dakota Texas Vermont Virginia Wisconsin

Note. NP = nurse practitioner. Based on 2011 NP scope of practice collaborative agreement requirements.

^aAuthors’ binary categorization of NP scope of practice regulations.

^bThree-category NP scope of practice from Kuo et al. (2013).