Frequencies for first 10,000 rows of ped_srvc_desc variable in pos2013 dataset 

        Services: Pediatric Description |      Freq.     Percent        Cum.
----------------------------------------+-----------------------------------
                                        |      8,601       86.01       86.01
                           NOT PROVIDED |        769        7.69       93.70
                      PROVIDED BY STAFF |        553        5.53       99.23
PROVIDED BY STAFF AND UNDER ARRANGEMENT |         41        0.41       99.64
             PROVIDED UNDER ARRANGEMENT |         36        0.36      100.00
----------------------------------------+-----------------------------------
                                  Total |     10,000      100.00

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