Frequencies for specialneedsplantype variable in snp2012 dataset :

       Special Needs Plan Type |      Freq.     Percent        Cum.
-------------------------------+-----------------------------------
Chronic or Disabling Condition |      2,669       36.19       36.19
                 Dual-Eligible |      4,194       56.87       93.06
                 Institutional |        512        6.94      100.00
-------------------------------+-----------------------------------
                         Total |      7,375      100.00

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