Frequencies for first 10,000 rows of prov0150 variable in pos2006 dataset :

clia - hosp |
  lab id #5 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,985       99.85       99.85
 01D0687850 |          1        0.01       99.86
 01D0887459 |          1        0.01       99.87
 03D0526218 |          1        0.01       99.88
 04D0915170 |          1        0.01       99.89
 05D0679913 |          1        0.01       99.90
 05D0695977 |          1        0.01       99.91
 05D0880907 |          1        0.01       99.92
 05D0880952 |          1        0.01       99.93
 05D0896616 |          1        0.01       99.94
 05D0913783 |          1        0.01       99.95
 05D0921673 |          1        0.01       99.96
 05D0935885 |          1        0.01       99.97
 05D0955133 |          2        0.02       99.99
 05D1001827 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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