Frequencies for specialneedsplantype variable in snp2017 dataset :

       Special Needs Plan Type |      Freq.     Percent        Cum.
-------------------------------+-----------------------------------
Chronic or Disabling Condition |      2,087       23.43       23.43
                 Dual-Eligible |      6,109       68.58       92.01
                 Institutional |        712        7.99      100.00
-------------------------------+-----------------------------------
                         Total |      8,908      100.00

by Jean Roth , jroth@nber.org , 6 Dec 2016