Frequencies for first 10,000 rows of esrd_ntwrk_num variable in pos2016 dataset :

       ESRD |
    Network |
     Number |      Freq.     Percent        Cum.
------------+-----------------------------------
          . |      9,268       92.68       92.68
         13 |        106        1.06       93.74
         15 |        121        1.21       94.95
         16 |          8        0.08       95.03
         17 |        125        1.25       96.28
         18 |        185        1.85       98.13
          5 |          1        0.01       98.14
          8 |        186        1.86      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 10 Jan 2017