Frequencies for first 10,000 rows of painscale variable in nhamcsed2014 dataset :

 Pain scale |
     (0-10) |      Freq.     Percent        Cum.
------------+-----------------------------------
      Blank |        198        1.98        1.98
    Unknown |      2,423       24.23       26.21
          0 |      2,411       24.11       50.32
          1 |         93        0.93       51.25
          2 |        293        2.93       54.18
          3 |        314        3.14       57.32
          4 |        431        4.31       61.63
          5 |        514        5.14       66.77
          6 |        562        5.62       72.39
          7 |        621        6.21       78.60
          8 |        866        8.66       87.26
          9 |        436        4.36       91.62
         10 |        838        8.38      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 11 Apr 2017