Frequencies for first 10,000 rows of totchron variable in namcs2013 dataset :

  Total number of |
          chronic |
       conditions |      Freq.     Percent        Cum.
------------------+-----------------------------------
Entire item blank |        302        3.02        3.02
                0 |      4,198       41.98       45.00
                1 |      2,403       24.03       69.03
                2 |      1,397       13.97       83.00
                3 |        900        9.00       92.00
                4 |        494        4.94       96.94
                5 |        193        1.93       98.87
                6 |         77        0.77       99.64
                7 |         27        0.27       99.91
                8 |          7        0.07       99.98
               10 |          1        0.01       99.99
               11 |          1        0.01      100.00
------------------+-----------------------------------
            Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 27 Mar 2017