Frequencies for first 10,000 rows of prov2095 variable in pos1991 dataset :

      spec: |
cardiovascu |
        lar |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,683       96.83       96.83
          N |        283        2.83       99.66
          Y |         34        0.34      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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