Frequencies for first 10,000 rows of vday variable in namcs1994 dataset :

     day of |
    visit - |
       1-31 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        345        3.45        3.45
          2 |        318        3.18        6.63
          3 |        222        2.22        8.85
          4 |        318        3.18       12.03
          5 |        306        3.06       15.09
          6 |        286        2.86       17.95
          7 |        428        4.28       22.23
          8 |        383        3.83       26.06
          9 |        298        2.98       29.04
         10 |        320        3.20       32.24
         11 |        339        3.39       35.63
         12 |        385        3.85       39.48
         13 |        321        3.21       42.69
         14 |        442        4.42       47.11
         15 |        413        4.13       51.24
         16 |        361        3.61       54.85
         17 |        271        2.71       57.56
         18 |        334        3.34       60.90
         19 |        322        3.22       64.12
         20 |        306        3.06       67.18
         21 |        317        3.17       70.35
         22 |        253        2.53       72.88
         23 |        242        2.42       75.30
         24 |        300        3.00       78.30
         25 |        365        3.65       81.95
         26 |        331        3.31       85.26
         27 |        296        2.96       88.22
         28 |        414        4.14       92.36
         29 |        380        3.80       96.16
         30 |        208        2.08       98.24
         31 |        176        1.76      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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