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

  Services Provided: Ophthalmic Surgery |
                            Description |      Freq.     Percent        Cum.
----------------------------------------+-----------------------------------
                                        |      8,614       86.14       86.14
                           NOT PROVIDED |      1,192       11.92       98.06
                      PROVIDED BY STAFF |        150        1.50       99.56
PROVIDED BY STAFF AND UNDER ARRANGEMENT |         20        0.20       99.76
             PROVIDED UNDER ARRANGEMENT |         24        0.24      100.00
----------------------------------------+-----------------------------------
                                  Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 19 Apr 2019