Frequencies for first 10,000 rows of urgnt_care_srvc_cd variable in pos2009 dataset :

SRV: URGENT |
CARE CENTER |
   SERVICES |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,638       86.38       86.38
          0 |      1,324       13.24       99.62
          1 |         25        0.25       99.87
          2 |          6        0.06       99.93
          3 |          7        0.07      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 17 May 2017