Frequencies for first 10,000 rows of pastvis variable in nhamcsed2008 dataset :

  number of |
 times seen |
 in this ed |
 in last 12 |
     months |      Freq.     Percent        Cum.
------------+-----------------------------------
      blank |        217        2.17        2.17
    unknown |      3,916       39.16       41.33
          0 |      2,910       29.10       70.43
          1 |      1,257       12.57       83.00
          2 |        642        6.42       89.42
          3 |        342        3.42       92.84
          4 |        183        1.83       94.67
          5 |        135        1.35       96.02
          6 |         94        0.94       96.96
          7 |         59        0.59       97.55
          8 |         58        0.58       98.13
          9 |         28        0.28       98.41
         10 |         29        0.29       98.70
         11 |         23        0.23       98.93
         12 |         13        0.13       99.06
         13 |         11        0.11       99.17
         14 |         18        0.18       99.35
         15 |          3        0.03       99.38
         16 |         14        0.14       99.52
         17 |          5        0.05       99.57
         18 |         10        0.10       99.67
         19 |          1        0.01       99.68
         20 |          3        0.03       99.71
         21 |          6        0.06       99.77
         22 |          3        0.03       99.80
         23 |          2        0.02       99.82
         25 |          2        0.02       99.84
         26 |          2        0.02       99.86
         27 |          2        0.02       99.88
         28 |          1        0.01       99.89
         29 |          2        0.02       99.91
         31 |          2        0.02       99.93
         34 |          1        0.01       99.94
         35 |          1        0.01       99.95
         37 |          1        0.01       99.96
         44 |          1        0.01       99.97
         45 |          1        0.01       99.98
         58 |          1        0.01       99.99
         98 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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