Frequencies for first 10,000 rows of vdayr variable in namcs2015 dataset :

Day of week |
   of visit |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |          7        0.07        0.07
          2 |      2,335       23.35       23.42
          3 |      2,509       25.09       48.51
          4 |      1,875       18.75       67.26
          5 |      1,863       18.63       85.89
          6 |      1,320       13.20       99.09
          7 |         91        0.91      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 25 Oct 2017