Frequencies for first 10,000 rows of culture variable in nhamcsopd2002 dataset :

    culture |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,588       95.88       95.88
          1 |        412        4.12      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 28 Mar 2016