Frequencies for first 10,000 rows of erange variable in namcs2007 dataset :

   if yes, are |
  out of range |
        levels |
  highlighted? |      Freq.     Percent        Cum.
---------------+-----------------------------------
         blank |        711        7.11        7.11
       unknown |        382        3.82       10.93
not applicable |      4,825       48.25       59.18
           yes |      3,429       34.29       93.47
            no |        653        6.53      100.00
---------------+-----------------------------------
         Total |     10,000      100.00

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