Frequencies for first 10,000 rows of edprim variable in nhamcsed2014 dataset :

        When patients with |
   identified primary care |
physicians (PCP) arrive at |
                the ED, ho |      Freq.     Percent        Cum.
---------------------------+-----------------------------------
                   Unknown |        832        8.32        8.32
                    Always |      3,450       34.50       42.82
                 Sometimes |      2,475       24.75       67.57
                    Rarely |        884        8.84       76.41
                     Never |      2,359       23.59      100.00
---------------------------+-----------------------------------
                     Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 11 Apr 2017