Frequencies for first 10,000 rows of vdayr variable in nhamcsed2007 dataset :

day of week |
   of visit |      Freq.     Percent        Cum.
------------+-----------------------------------
     sunday |      1,385       13.85       13.85
     monday |      1,503       15.03       28.88
    tuesday |      1,497       14.97       43.85
  wednesday |      1,428       14.28       58.13
   thursday |      1,401       14.01       72.14
     friday |      1,395       13.95       86.09
   saturday |      1,391       13.91      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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