Frequencies for first 10,000 rows of mgntc_rsnc_img_srvc_desc variable in pos20

              Services: MRI Description |      Freq.     Percent        Cum.
----------------------------------------+-----------------------------------
                                        |      8,601       86.01       86.01
                           NOT PROVIDED |        983        9.83       95.84
                      PROVIDED BY STAFF |        234        2.34       98.18
PROVIDED BY STAFF AND UNDER ARRANGEMENT |         28        0.28       98.46
             PROVIDED UNDER ARRANGEMENT |        154        1.54      100.00
----------------------------------------+-----------------------------------
                                  Total |     10,000      100.00

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