Frequencies for first 10,000 rows of painscale variable in nhamcsed2010 dataset :

 Presenting |
   level of |
       pain |      Freq.     Percent        Cum.
------------+-----------------------------------
      blank |        242        2.42        2.42
    unknown |      2,062       20.62       23.04
          0 |      2,023       20.23       43.27
          1 |        155        1.55       44.82
          2 |        274        2.74       47.56
          3 |        287        2.87       50.43
          4 |        486        4.86       55.29
          5 |        640        6.40       61.69
          6 |        602        6.02       67.71
          7 |        675        6.75       74.46
          8 |      1,049       10.49       84.95
          9 |        483        4.83       89.78
         10 |      1,022       10.22      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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