Frequencies for first 10,000 rows of specialneedsplantype variable in planreport2006 dataset :

       Special Needs Plan Type |      Freq.     Percent        Cum.
-------------------------------+-----------------------------------
                               |      9,237       92.37       92.37
Chronic or Disabling Condition |         37        0.37       92.74
                 Dual-Eligible |        576        5.76       98.50
                 Institutional |        150        1.50      100.00
-------------------------------+-----------------------------------
                         Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 14 Apr 2016