Frequencies for first 10,000 rows of nrsng_srvc_cd variable in pos2011 dataset :

   Service: |
    Nursing |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      7,900       79.00       79.00
          0 |        140        1.40       80.40
          1 |      1,872       18.72       99.12
          2 |         11        0.11       99.23
          3 |         77        0.77      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 20 Apr 2019