Frequencies for first 10,000 rows of pet_scan_srvc_desc variable in pos2013 dat

         Services: PET Scan Description |      Freq.     Percent        Cum.
----------------------------------------+-----------------------------------
                                        |      8,601       86.01       86.01
                           NOT PROVIDED |      1,264       12.64       98.65
                      PROVIDED BY STAFF |         43        0.43       99.08
PROVIDED BY STAFF AND UNDER ARRANGEMENT |         25        0.25       99.33
             PROVIDED UNDER ARRANGEMENT |         67        0.67      100.00
----------------------------------------+-----------------------------------
                                  Total |     10,000      100.00

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