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

    Services Provided: Physical Therapy |
                            Description |      Freq.     Percent        Cum.
----------------------------------------+-----------------------------------
                                        |      5,858       58.58       58.58
                            COMBINATION |        319        3.19       61.77
                           NOT PROVIDED |        291        2.91       64.68
                           Not Provided |         78        0.78       65.46
                  PROVIDED BY EMPLOYEES |        105        1.05       66.51
     PROVIDED BY INDEPENDENT CONTRACTOR |         14        0.14       66.65
                      PROVIDED BY STAFF |      1,314       13.14       79.79
PROVIDED BY STAFF AND UNDER ARRANGEMENT |         66        0.66       80.45
             PROVIDED UNDER ARRANGEMENT |      1,365       13.65       94.10
                               Provided |        590        5.90      100.00
----------------------------------------+-----------------------------------
                                  Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 20 Apr 2019