Frequencies for first 10,000 rows of vdayr variable in nhamcsopd1998 dataset :

day of week |
 of visit - |
     recode |      Freq.     Percent        Cum.
------------+-----------------------------------
     Sunday |        107        1.07        1.07
     Monday |      1,972       19.72       20.79
    Tuesday |      2,169       21.69       42.48
  Wednesday |      1,987       19.87       62.35
   Thursday |      1,985       19.85       82.20
     Friday |      1,604       16.04       98.24
   Saturday |        176        1.76      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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