Frequencies for first 10,000 rows of prov0250 variable in pos1991 dataset :

compliance: |
 membership |
 in network |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,831       98.31       98.31
          4 |        169        1.69      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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