Frequencies for first 10,000 rows of prov0135 variable in pos1993 dataset :

clia - hosp |
  lab id #2 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,980       99.80       99.80
 01D0026562 |          1        0.01       99.81
 01D0026746 |          1        0.01       99.82
 01D0302100 |          1        0.01       99.83
 01D0305079 |          1        0.01       99.84
 01D0641601 |          1        0.01       99.85
 01D0641733 |          1        0.01       99.86
 01D0670622 |          1        0.01       99.87
 01D0673149 |          1        0.01       99.88
 01D0674779 |          1        0.01       99.89
 01D0686260 |          1        0.01       99.90
 01D0693090 |          1        0.01       99.91
 01D0694066 |          1        0.01       99.92
 01D0698967 |          1        0.01       99.93
 01D0857317 |          1        0.01       99.94
 01D0862373 |          1        0.01       99.95
 04D0049651 |          1        0.01       99.96
 05D0548156 |          1        0.01       99.97
 05D0580500 |          1        0.01       99.98
 06D0512008 |          1        0.01       99.99
 06D0861006 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 26 Jan 2016