Frequencies for first 10,000 rows of allserv variable in namcs2014 dataset :

     Were any services ordered or |
  provided including vital signs? |      Freq.     Percent        Cum.
----------------------------------+-----------------------------------
        No services were reported |        291        2.91        2.91
At least one service was reported |      9,709       97.09      100.00
----------------------------------+-----------------------------------
                            Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 27 Mar 2017