Frequencies for trim variable in drg2005 dataset :

       Trim |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        502       92.45       92.45
         40 |          2        0.37       92.82
         50 |          3        0.55       93.37
         60 |          1        0.18       93.55
         70 |          1        0.18       93.74
         90 |          2        0.37       94.11
        110 |          1        0.18       94.29
        130 |          1        0.18       94.48
        150 |          2        0.37       94.84
        170 |          3        0.55       95.40
        190 |          1        0.18       95.58
        200 |          1        0.18       95.76
        220 |          2        0.37       96.13
        230 |          1        0.18       96.32
        240 |          1        0.18       96.50
        260 |          2        0.37       96.87
        270 |          4        0.74       97.61
        280 |          1        0.18       97.79
        290 |          4        0.74       98.53
        300 |          2        0.37       98.90
        330 |          2        0.37       99.26
        350 |          1        0.18       99.45
        370 |          2        0.37       99.82
        420 |          1        0.18      100.00
------------+-----------------------------------
      Total |        543      100.00

by Jean Roth , jroth@nber.org , 22 Apr 2016