Frequencies for first 10,000 rows of prov5540 variable in pos2006 dataset :

  number of |
   patients |
   tue. 4th |
      shift |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,960       99.60       99.60
          1 |          2        0.02       99.62
          3 |          1        0.01       99.63
          4 |          2        0.02       99.65
          5 |          4        0.04       99.69
          6 |          4        0.04       99.73
          7 |          3        0.03       99.76
          8 |          2        0.02       99.78
          9 |          2        0.02       99.80
         10 |          3        0.03       99.83
         11 |          2        0.02       99.85
         12 |          3        0.03       99.88
         13 |          3        0.03       99.91
         14 |          1        0.01       99.92
         16 |          1        0.01       99.93
         18 |          5        0.05       99.98
         24 |          1        0.01       99.99
         25 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 26 Jan 2016