Frequencies for first 10,000 rows of scpwi23d variable in nhamcsopd2008 dataset :

scope write |
  in #2 - 3 |
      digit |      Freq.     Percent        Cum.
------------+-----------------------------------
         -9 |      9,976       99.76       99.76
        212 |          2        0.02       99.78
        314 |          1        0.01       99.79
        332 |          1        0.01       99.80
        451 |          9        0.09       99.89
        452 |          8        0.08       99.97
        482 |          1        0.01       99.98
        542 |          1        0.01       99.99
        563 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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