Frequencies for first 10,000 rows of urgnt_care_srvc_cd variable in pos2010 dataset :

SRV: URGENT |
CARE CENTER |
   SERVICES |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,626       86.26       86.26
          0 |      1,328       13.28       99.54
          1 |         30        0.30       99.84
          2 |          7        0.07       99.91
          3 |          9        0.09      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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