Frequencies for state variable in ambulatory_surgical_measures_state dataset :

      State |      Freq.     Percent        Cum.
------------+-----------------------------------
         AK |          2        1.89        1.89
         AL |          2        1.89        3.77
         AR |          2        1.89        5.66
         AZ |          2        1.89        7.55
         CA |          2        1.89        9.43
         CO |          2        1.89       11.32
         CT |          2        1.89       13.21
         DC |          2        1.89       15.09
         DE |          2        1.89       16.98
         FL |          2        1.89       18.87
         GA |          2        1.89       20.75
         GU |          2        1.89       22.64
         HI |          2        1.89       24.53
         IA |          2        1.89       26.42
         ID |          2        1.89       28.30
         IL |          2        1.89       30.19
         IN |          2        1.89       32.08
         KS |          2        1.89       33.96
         KY |          2        1.89       35.85
         LA |          2        1.89       37.74
         MA |          2        1.89       39.62
         MD |          2        1.89       41.51
         ME |          2        1.89       43.40
         MI |          2        1.89       45.28
         MN |          2        1.89       47.17
         MO |          2        1.89       49.06
         MS |          2        1.89       50.94
         MT |          2        1.89       52.83
         NC |          2        1.89       54.72
         ND |          2        1.89       56.60
         NE |          2        1.89       58.49
         NH |          2        1.89       60.38
         NJ |          2        1.89       62.26
         NM |          2        1.89       64.15
         NV |          2        1.89       66.04
         NY |          2        1.89       67.92
         OH |          2        1.89       69.81
         OK |          2        1.89       71.70
         OR |          2        1.89       73.58
         PA |          2        1.89       75.47
         PR |          2        1.89       77.36
         RI |          2        1.89       79.25
         SC |          2        1.89       81.13
         SD |          2        1.89       83.02
         TN |          2        1.89       84.91
         TX |          2        1.89       86.79
         UT |          2        1.89       88.68
         VA |          2        1.89       90.57
         VT |          2        1.89       92.45
         WA |          2        1.89       94.34
         WI |          2        1.89       96.23
         WV |          2        1.89       98.11
         WY |          2        1.89      100.00
------------+-----------------------------------
      Total |        106      100.00

by Jean Roth , jroth@nber.org , 15 Nov 2016