Frequencies for first 10,000 rows of admit variable in nhamcsed2006 dataset :

   if admitted to hospital was |
         checked, admitted to: |      Freq.     Percent        Cum.
-------------------------------+-----------------------------------
            critical care unit |        194        1.94        1.94
                   or/cath lab |         50        0.50        2.44
                other bed/unit |        885        8.85       11.29
                       unknown |        178        1.78       13.07
n/a (not admitted to hospital) |      8,692       86.92       99.99
                         blank |          1        0.01      100.00
-------------------------------+-----------------------------------
                         Total |     10,000      100.00

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