Frequencies for first 10,000 rows of residnce variable in nhamcsed2008 dataset :

patient residence |      Freq.     Percent        Cum.
------------------+-----------------------------------
            blank |        222        2.22        2.22
          unknown |        158        1.58        3.80
private residence |      9,139       91.39       95.19
     nursing home |        242        2.42       97.61
other institution |         78        0.78       98.39
  other residence |         99        0.99       99.38
         homeless |         62        0.62      100.00
------------------+-----------------------------------
            Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 28 Mar 2016