Frequencies for first 10,000 rows of vdayr variable in nhamcsed2009 dataset :

day of week |
   of visit |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      1,467       14.67       14.67
          2 |      1,531       15.31       29.98
          3 |      1,430       14.30       44.28
          4 |      1,421       14.21       58.49
          5 |      1,406       14.06       72.55
          6 |      1,376       13.76       86.31
          7 |      1,369       13.69      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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