Frequencies for first 10,000 rows of painscale variable in nhamcsed2009 dataset :

 pain scale |      Freq.     Percent        Cum.
------------+-----------------------------------
         -9 |        422        4.22        4.22
         -8 |      1,838       18.38       22.60
          0 |      2,288       22.88       45.48
          1 |        138        1.38       46.86
          2 |        332        3.32       50.18
          3 |        330        3.30       53.48
          4 |        513        5.13       58.61
          5 |        591        5.91       64.52
          6 |        613        6.13       70.65
          7 |        573        5.73       76.38
          8 |        919        9.19       85.57
          9 |        435        4.35       89.92
         10 |      1,008       10.08      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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