Frequencies for specialneedsplantype variable in snp2010 dataset :

       Special Needs Plan Type |      Freq.     Percent        Cum.
-------------------------------+-----------------------------------
Chronic or Disabling Condition |      3,508       40.22       40.22
                 Dual-Eligible |      4,582       52.53       92.75
                 Institutional |        632        7.25      100.00
-------------------------------+-----------------------------------
                         Total |      8,722      100.00

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