Frequencies for first 10,000 rows of vdayr variable in nhamcsopd1999 dataset :

day of week |
 of visit - |
     recode |      Freq.     Percent        Cum.
------------+-----------------------------------
     Sunday |         97        0.97        0.97
     Monday |      2,105       21.05       22.02
    Tuesday |      2,092       20.92       42.94
  Wednesday |      2,058       20.58       63.52
   Thursday |      1,969       19.69       83.21
     Friday |      1,522       15.22       98.43
   Saturday |        157        1.57      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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