Frequencies for first 10,000 rows of scpwi13d variable in nhamcsopd2008 dataset :

scope write |
  in #1 - 3 |
      digit |      Freq.     Percent        Cum.
------------+-----------------------------------
         -9 |      9,712       97.12       97.12
        122 |          1        0.01       97.13
        162 |          1        0.01       97.14
        169 |          1        0.01       97.15
        221 |         13        0.13       97.28
        291 |          1        0.01       97.29
        314 |         10        0.10       97.39
        332 |         19        0.19       97.58
        422 |          1        0.01       97.59
        449 |         11        0.11       97.70
        451 |         49        0.49       98.19
        452 |        105        1.05       99.24
        482 |          5        0.05       99.29
        492 |          1        0.01       99.30
        521 |          3        0.03       99.33
        542 |          9        0.09       99.42
        552 |          1        0.01       99.43
        563 |          4        0.04       99.47
        573 |         15        0.15       99.62
        582 |          1        0.01       99.63
        681 |          4        0.04       99.67
        702 |         17        0.17       99.84
        802 |          7        0.07       99.91
        887 |          1        0.01       99.92
        999 |          8        0.08      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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