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

          Services Provided: Outpatient |
                            Description |      Freq.     Percent        Cum.
----------------------------------------+-----------------------------------
                                        |      8,606       86.06       86.06
                           NOT PROVIDED |        317        3.17       89.23
                      PROVIDED BY STAFF |        953        9.53       98.76
PROVIDED BY STAFF AND UNDER ARRANGEMENT |         82        0.82       99.58
             PROVIDED UNDER ARRANGEMENT |         42        0.42      100.00
----------------------------------------+-----------------------------------
                                  Total |     10,000      100.00

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