Frequencies for first 10,000 rows of clia_id_number_1 variable in pos1992 dataset :

clia - hosp |
  lab id #1 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,990       99.90       99.90
 03L0000028 |          1        0.01       99.91
 04L0000010 |          1        0.01       99.92
 05L0000191 |          1        0.01       99.93
 06L0000026 |          1        0.01       99.94
 06L0000055 |          1        0.01       99.95
 06L0000056 |          1        0.01       99.96
 06L0000063 |          1        0.01       99.97
 06L0000065 |          1        0.01       99.98
 06L0000066 |          1        0.01       99.99
 06L0000072 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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