Frequencies for first 10,000 rows of vdayr variable in nhamcsopd2011 dataset :

Day of Week |
   of Visit |      Freq.     Percent        Cum.
------------+-----------------------------------
     Sunday |         62        0.62        0.62
     Monday |      1,891       18.91       19.53
    Tuesday |      2,273       22.73       42.26
  Wednesday |      2,078       20.78       63.04
   Thursday |      1,974       19.74       82.78
     Friday |      1,653       16.53       99.31
   Saturday |         69        0.69      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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