Frequencies for first 10,000 rows of clia_id_number_4 variable in pos1994 dataset :

clia - hosp |
  lab id #4 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,990       99.90       99.90
 01D0303540 |          1        0.01       99.91
 01D0674780 |          1        0.01       99.92
 01D0686259 |          1        0.01       99.93
 01D0689307 |          1        0.01       99.94
 01D0718930 |          1        0.01       99.95
 01D0865221 |          1        0.01       99.96
 01D0878846 |          1        0.01       99.97
 04D0873836 |          1        0.01       99.98
 05D0667434 |          1        0.01       99.99
 05D0699147 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 17 May 2017