Frequencies for first 10,000 rows of prov0145 variable in pos1997 dataset :

clia - hosp |
  lab id #4 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,986       99.86       99.86
 01D0303540 |          1        0.01       99.87
 01D0674780 |          1        0.01       99.88
 01D0686259 |          1        0.01       99.89
 01D0689307 |          1        0.01       99.90
 01D0690066 |          1        0.01       99.91
 01D0697083 |          1        0.01       99.92
 01D0706597 |          1        0.01       99.93
 04D0698656 |          1        0.01       99.94
 04D0871639 |          1        0.01       99.95
 04D0873836 |          1        0.01       99.96
 04D0874017 |          1        0.01       99.97
 05D0699147 |          1        0.01       99.98
 05D0699359 |          1        0.01       99.99
 06D0879143 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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