Frequencies for first 10,000 rows of prov3290 variable in pos2010 dataset :

  SRV: PHYS |
EXTENDER-ON |
SITE-RESIDE |
         NT |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      7,641       76.41       76.41
          N |      1,722       17.22       93.63
          Y |        637        6.37      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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