Frequencies for pateven variable in namcsphys2005_2010 dataset :

       does |
  physician |
        see |
patients in |
     office |
     during |
evenings or |
         on |
  weekends? |      Freq.     Percent        Cum.
------------+-----------------------------------
         -9 |         38        0.51        0.51
         -8 |         30        0.40        0.91
         -6 |      1,058       14.20       15.12
          1 |      1,742       23.39       38.50
          2 |      4,581       61.50      100.00
------------+-----------------------------------
      Total |      7,449      100.00

by Jean Roth , jroth@nber.org , 28 Mar 2016