Frequencies for specialneedsplantype variable in snp2016 dataset :

       Special Needs Plan Type |      Freq.     Percent        Cum.
-------------------------------+-----------------------------------
Chronic or Disabling Condition |      2,530       30.10       30.10
                 Dual-Eligible |      5,336       63.48       93.58
                 Institutional |        540        6.42      100.00
-------------------------------+-----------------------------------
                         Total |      8,406      100.00

by Jean Roth , jroth@nber.org , 19 Sep 2018