Frequencies for first 10,000 rows of allserv variable in namcs2012 dataset :

     Were any services ordered or |
  provided including vital signs? |      Freq.     Percent        Cum.
----------------------------------+-----------------------------------
        No services were reported |        360        3.60        3.60
At least one service was reported |      9,640       96.40      100.00
----------------------------------+-----------------------------------
                            Total |     10,000      100.00

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