Frequencies for first 10,000 rows of prov2710 variable in posclia1997 dataset :

   prov2710 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      7,558       75.58       75.58
        001 |      1,722       17.22       92.80
         AZ |        571        5.71       98.51
         M1 |        135        1.35       99.86
         M2 |         14        0.14      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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