Frequencies for first 10,000 rows of nrsng_2_srvc_cd variable in pos2008 dataset :

       srv: |
 nursing #2 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,999       99.99       99.99
          0 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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