Frequencies for first 10,000 rows of scpwi23d variable in namcs2002 dataset :

      Scope |
  procedure |
write-in #2 |
  - 3 digit |      Freq.     Percent        Cum.
------------+-----------------------------------
        000 |      9,984       99.84       99.84
        212 |          1        0.01       99.85
        314 |          1        0.01       99.86
        451 |          3        0.03       99.89
        452 |          5        0.05       99.94
        492 |          4        0.04       99.98
        563 |          1        0.01       99.99
        892 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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