Frequencies for first 10,000 rows of totchron variable in nhamcsopd2009 dataset :

  total number of |
          chronic |
       conditions |      Freq.     Percent        Cum.
------------------+-----------------------------------
entire item blank |        317        3.17        3.17
                0 |      4,407       44.07       47.24
                1 |      2,550       25.50       72.74
                2 |      1,309       13.09       85.83
                3 |        794        7.94       93.77
                4 |        398        3.98       97.75
                5 |        158        1.58       99.33
                6 |         50        0.50       99.83
                7 |         15        0.15       99.98
                8 |          2        0.02      100.00
------------------+-----------------------------------
            Total |     10,000      100.00

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