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

   Service: |
 Laboratory |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,321       83.21       83.21
          0 |      1,159       11.59       94.80
          1 |         65        0.65       95.45
          2 |        421        4.21       99.66
          3 |         34        0.34      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 19 Apr 2019