Frequencies for first 10,000 rows of scpwi12d variable in nhamcsopd2008 dataset :

scope write |
  in #1 - 2 |
      digit |      Freq.     Percent        Cum.
------------+-----------------------------------
         -9 |      9,712       97.12       97.12
         12 |          1        0.01       97.13
         16 |          2        0.02       97.15
         22 |         13        0.13       97.28
         29 |          1        0.01       97.29
         31 |         10        0.10       97.39
         33 |         19        0.19       97.58
         42 |          1        0.01       97.59
         44 |         11        0.11       97.70
         45 |        154        1.54       99.24
         48 |          5        0.05       99.29
         49 |          1        0.01       99.30
         52 |          3        0.03       99.33
         54 |          9        0.09       99.42
         55 |          1        0.01       99.43
         56 |          4        0.04       99.47
         57 |         15        0.15       99.62
         58 |          1        0.01       99.63
         68 |          4        0.04       99.67
         70 |         17        0.17       99.84
         80 |          7        0.07       99.91
         88 |          1        0.01       99.92
         99 |          8        0.08      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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