Frequencies for first 10,000 rows of mgntc_rsnc_img_srvc_cd variable in pos2017

  Services: |
   MRI Code |      Freq.     Percent        Cum.
------------+-----------------------------------
          . |      8,569       85.69       85.69
          0 |        939        9.39       95.08
          1 |        283        2.83       97.91
          2 |        157        1.57       99.48
          3 |         52        0.52      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 9 Jan 2018