Frequencies for first 10,000 rows of esrd_ntwrk_num variable in pos2002 dataset :

       esrd |
  network # |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,212       92.12       92.12
         02 |          1        0.01       92.13
         05 |          1        0.01       92.14
         08 |        117        1.17       93.31
         13 |         82        0.82       94.13
         14 |          1        0.01       94.14
         15 |        108        1.08       95.22
         16 |          2        0.02       95.24
         17 |        167        1.67       96.91
         18 |        309        3.09      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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