Frequencies for first 10,000 rows of totchron variable in namcs2006 dataset :

  total number of |
          chronic |
       conditions |      Freq.     Percent        Cum.
------------------+-----------------------------------
                0 |      4,639       46.39       46.39
                1 |      2,294       22.94       69.33
                2 |      1,307       13.07       82.40
                3 |        746        7.46       89.86
                4 |        418        4.18       94.04
                5 |        166        1.66       95.70
                6 |         75        0.75       96.45
                7 |         29        0.29       96.74
                8 |          5        0.05       96.79
                9 |          6        0.06       96.85
               11 |          1        0.01       96.86
entire item blank |        314        3.14      100.00
------------------+-----------------------------------
            Total |     10,000      100.00

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