Frequencies for first 10,000 rows of admit variable in nhamcsed2005 dataset :

   if admitted to hospital was |
         checked, admitted to: |      Freq.     Percent        Cum.
-------------------------------+-----------------------------------
            critical care unit |        202        2.02        2.02
                   or/cath lab |         44        0.44        2.46
                other bed/unit |        751        7.51        9.97
                       unknown |         43        0.43       10.40
n/a (not admitted to hospital) |      8,913       89.13       99.53
                         blank |         47        0.47      100.00
-------------------------------+-----------------------------------
                         Total |     10,000      100.00

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