Frequencies for first 10,000 rows of op_srvc_desc variable in pos2013 dataset :

       Services: Outpatient Description |      Freq.     Percent        Cum.
----------------------------------------+-----------------------------------
                                        |      8,601       86.01       86.01
                           NOT PROVIDED |        319        3.19       89.20
                      PROVIDED BY STAFF |        939        9.39       98.59
PROVIDED BY STAFF AND UNDER ARRANGEMENT |         96        0.96       99.55
             PROVIDED UNDER ARRANGEMENT |         45        0.45      100.00
----------------------------------------+-----------------------------------
                                  Total |     10,000      100.00

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