Frequencies for first 10,000 rows of prov6280 variable in pos2006 dataset :

srv: urgent |
care center |
   services |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,710       87.10       87.10
          0 |      1,274       12.74       99.84
          1 |         14        0.14       99.98
          2 |          1        0.01       99.99
          3 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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