Frequencies for first 10,000 rows of shift_4_tue_ptnt_cnt variable in pos2003 dataset :

  number of |
   patients |
   tue. 4th |
      shift |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,974       99.74       99.74
          1 |          1        0.01       99.75
          2 |          2        0.02       99.77
          4 |          2        0.02       99.79
          5 |          2        0.02       99.81
          6 |          3        0.03       99.84
          7 |          1        0.01       99.85
          8 |          1        0.01       99.86
          9 |          1        0.01       99.87
         10 |          1        0.01       99.88
         11 |          1        0.01       99.89
         12 |          2        0.02       99.91
         13 |          2        0.02       99.93
         16 |          1        0.01       99.94
         17 |          1        0.01       99.95
         18 |          3        0.03       99.98
         25 |          1        0.01       99.99
         26 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 17 May 2017