Frequencies for first 10,000 rows of shift_4_tue_ptnt_cnt variable in pos2009 dataset :

  NUMBER OF |
   PATIENTS |
   TUE. 4TH |
      SHIFT |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,955       99.55       99.55
          1 |          1        0.01       99.56
          2 |          1        0.01       99.57
          3 |          4        0.04       99.61
          4 |          3        0.03       99.64
          5 |          2        0.02       99.66
          6 |          7        0.07       99.73
          7 |          3        0.03       99.76
          9 |          3        0.03       99.79
         10 |          4        0.04       99.83
         11 |          2        0.02       99.85
         12 |          2        0.02       99.87
         13 |          3        0.03       99.90
         14 |          1        0.01       99.91
         16 |          1        0.01       99.92
         18 |          5        0.05       99.97
         24 |          2        0.02       99.99
         25 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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