Frequencies for first 10,000 rows of vdayr variable in nhamcsed2006 dataset :

day of week |
   of visit |      Freq.     Percent        Cum.
------------+-----------------------------------
     sunday |      1,476       14.76       14.76
     monday |      1,488       14.88       29.64
    tuesday |      1,444       14.44       44.08
  wednesday |      1,397       13.97       58.05
   thursday |      1,345       13.45       71.50
     friday |      1,380       13.80       85.30
   saturday |      1,470       14.70      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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