Frequencies for first 10,000 rows of scpwi22d variable in namcs2002 dataset :

      Scope |
  procedure |
write-in #2 |
  - 2 digit |      Freq.     Percent        Cum.
------------+-----------------------------------
         00 |      9,984       99.84       99.84
         21 |          1        0.01       99.85
         31 |          1        0.01       99.86
         45 |          8        0.08       99.94
         49 |          4        0.04       99.98
         56 |          1        0.01       99.99
         89 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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