text: Assuming state size would be a second cut variable , New York ( 1 percent ) , California ( 3 percent ) , Ohio ( 6 percent ) , and Texas ( 15 percent ) could be one group to study , while Kansas ( less than 1 percent ) , Massachusetts , ( 2 percent ) , Oklahoma ( 6 percent ) , and Arizona ( 9 percent ) could form a second group of smaller states .
  
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  State size is a variable in this study and rather important .