Frequencies for first 10,000 rows of scopwi1r variable in namcs2002 dataset :

      Scope |
  procedure |
write-in #1 |
   - recode |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,697       96.97       96.97
       2121 |          1        0.01       96.98
       2211 |          1        0.01       96.99
       2219 |         49        0.49       97.48
       2911 |          3        0.03       97.51
       3142 |         27        0.27       97.78
       3323 |          1        0.01       97.79
       4223 |          2        0.02       97.81
       4413 |          3        0.03       97.84
       4513 |         26        0.26       98.10
       4523 |         73        0.73       98.83
       4524 |          3        0.03       98.86
       4542 |          1        0.01       98.87
       4823 |          6        0.06       98.93
       4921 |         16        0.16       99.09
       5110 |          2        0.02       99.11
       5421 |          1        0.01       99.12
       5732 |         61        0.61       99.73
       5733 |          3        0.03       99.76
       6812 |          3        0.03       99.79
       7021 |         10        0.10       99.89
       8871 |          1        0.01       99.90
       8877 |          1        0.01       99.91
       8922 |          1        0.01       99.92
       9999 |          8        0.08      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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