Frequencies for pharm_ev variable in parkwork dataset :

      First |
    Harmful |
      Event |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |         21        1.97        1.97
          5 |          2        0.19        2.16
          8 |         91        8.55       10.71
          9 |          9        0.85       11.56
         12 |        197       18.52       30.08
         14 |        454       42.67       72.74
         17 |          1        0.09       72.84
         18 |         14        1.32       74.15
         19 |          2        0.19       74.34
         20 |          1        0.09       74.44
         24 |          5        0.47       74.91
         25 |          2        0.19       75.09
         26 |          5        0.47       75.56
         30 |         27        2.54       78.10
         31 |          9        0.85       78.95
         32 |          6        0.56       79.51
         33 |         61        5.73       85.24
         34 |         12        1.13       86.37
         35 |          7        0.66       87.03
         38 |         24        2.26       89.29
         39 |         11        1.03       90.32
         40 |          2        0.19       90.51
         41 |          1        0.09       90.60
         42 |         26        2.44       93.05
         43 |          6        0.56       93.61
         44 |          5        0.47       94.08
         45 |         24        2.26       96.33
         46 |          2        0.19       96.52
         48 |          1        0.09       96.62
         53 |         22        2.07       98.68
         54 |          1        0.09       98.78
         59 |         13        1.22      100.00
------------+-----------------------------------
      Total |      1,064      100.00

by Jean Roth , jroth@nber.org , 18 Apr 2016