Frequencies for first 10,000 rows of prov2205 variable in pos2009 dataset :

       SRV: |
 LABORATORY |
(ANATOMICAL |
          ) |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,638       86.38       86.38
          0 |        544        5.44       91.82
          1 |        375        3.75       95.57
          2 |        369        3.69       99.26
          3 |         74        0.74      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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