Frequencies for first 10,000 rows of vdayr variable in nhamcsed2011 dataset :

Day of Week |
   of Visit |      Freq.     Percent        Cum.
------------+-----------------------------------
     Sunday |      1,443       14.43       14.43
     Monday |      1,556       15.56       29.99
    Tuesday |      1,426       14.26       44.25
  Wednesday |      1,429       14.29       58.54
   Thursday |      1,346       13.46       72.00
     Friday |      1,406       14.06       86.06
   Saturday |      1,394       13.94      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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