Frequencies for first 10,000 rows of cl_srvc_desc variable in pos2012 dataset :

 Services Provided: Clinical Laboratory |
                                  Descr |      Freq.     Percent        Cum.
----------------------------------------+-----------------------------------
                                        |      8,606       86.06       86.06
                           NOT PROVIDED |         65        0.65       86.71
                      PROVIDED BY STAFF |        891        8.91       95.62
PROVIDED BY STAFF AND UNDER ARRANGEMENT |        172        1.72       97.34
             PROVIDED UNDER ARRANGEMENT |        266        2.66      100.00
----------------------------------------+-----------------------------------
                                  Total |     10,000      100.00

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