Frequencies for first 10,000 rows of totchron variable in nhamcsopd2007 dataset :

  total number of |
          chronic |
       conditions |      Freq.     Percent        Cum.
------------------+-----------------------------------
entire item blank |        271        2.71        2.71
                0 |      4,625       46.25       48.96
                1 |      2,508       25.08       74.04
                2 |      1,291       12.91       86.95
                3 |        721        7.21       94.16
                4 |        381        3.81       97.97
                5 |        129        1.29       99.26
                6 |         44        0.44       99.70
                7 |         17        0.17       99.87
                8 |         11        0.11       99.98
                9 |          1        0.01       99.99
               10 |          1        0.01      100.00
------------------+-----------------------------------
            Total |     10,000      100.00

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