Frequencies for first 10,000 rows of prov0685 variable in pos1997 dataset :

       esrd |
  network # |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,335       93.35       93.35
         02 |          1        0.01       93.36
         04 |          1        0.01       93.37
         05 |          8        0.08       93.45
         08 |         86        0.86       94.31
         13 |         55        0.55       94.86
         14 |          2        0.02       94.88
         15 |        117        1.17       96.05
         16 |          2        0.02       96.07
         17 |        139        1.39       97.46
         18 |        254        2.54      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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