Frequencies for first 10,000 rows of surgday variable in nhamcsed2010 dataset :

   How many |
  days in a |
   week are |
  inpatient |
   elective |
  surgeries |
 scheduled? |      Freq.     Percent        Cum.
------------+-----------------------------------
    unknown |        484        4.84        4.84
          0 |        671        6.71       11.55
          1 |         81        0.81       12.36
          3 |        143        1.43       13.79
          4 |        103        1.03       14.82
          5 |      5,854       58.54       73.36
          6 |      1,752       17.52       90.88
          7 |        912        9.12      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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