Frequencies for first 10,000 rows of prov6250 variable in pos2010 dataset :

       SRV: |
PSYCHIATRIC |
- GERIATRIC |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,626       86.26       86.26
          0 |      1,286       12.86       99.12
          1 |         65        0.65       99.77
          2 |         14        0.14       99.91
          3 |          9        0.09      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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