Frequencies for first 10,000 rows of vday variable in namcs1996 dataset :

     day of |
    visit - |
       1-31 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        338        3.38        3.38
          2 |        289        2.89        6.27
          3 |        279        2.79        9.06
          4 |        272        2.72       11.78
          5 |        422        4.22       16.00
          6 |        351        3.51       19.51
          7 |        278        2.78       22.29
          8 |        354        3.54       25.83
          9 |        367        3.67       29.50
         10 |        326        3.26       32.76
         11 |        382        3.82       36.58
         12 |        430        4.30       40.88
         13 |        368        3.68       44.56
         14 |        255        2.55       47.11
         15 |        404        4.04       51.15
         16 |        365        3.65       54.80
         17 |        271        2.71       57.51
         18 |        356        3.56       61.07
         19 |        369        3.69       64.76
         20 |        339        3.39       68.15
         21 |        289        2.89       71.04
         22 |        336        3.36       74.40
         23 |        383        3.83       78.23
         24 |        255        2.55       80.78
         25 |        324        3.24       84.02
         26 |        301        3.01       87.03
         27 |        203        2.03       89.06
         28 |        268        2.68       91.74
         29 |        353        3.53       95.27
         30 |        296        2.96       98.23
         31 |        177        1.77      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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