Frequencies for first 10,000 rows of poolnurs variable in nhamcsed2011 dataset :

  Does your |
ED use pool |
    nurses? |      Freq.     Percent        Cum.
------------+-----------------------------------
    Unknown |        291        2.91        2.91
        Yes |      5,251       52.51       55.42
         No |      4,458       44.58      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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