Frequencies for first 10,000 rows of prov0150 variable in pos2001 dataset :

clia - hosp |
  lab id #5 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,993       99.93       99.93
 01D0687850 |          1        0.01       99.94
 03D0526218 |          1        0.01       99.95
 04D0467393 |          1        0.01       99.96
 04D0915170 |          1        0.01       99.97
 05D0921673 |          1        0.01       99.98
 05D0935885 |          1        0.01       99.99
 05D0955133 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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