Frequencies for first 10,000 rows of major variable in namcs2000 dataset :

           major reason for the visit |      Freq.     Percent        Cum.
--------------------------------------+-----------------------------------
                        Acute problem |      4,161       41.61       41.61
             Chronic problem, routine |      2,202       22.02       63.63
             Chronic problem, flareup |        735        7.35       70.98
Pre- or post-surgery, injury followup |        776        7.76       78.74
                     Non-illness care |      1,825       18.25       96.99
                     Blank or unknown |        301        3.01      100.00
--------------------------------------+-----------------------------------
                                Total |     10,000      100.00

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