Frequencies for trim variable in drg1991 dataset :

       Trim |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |          5        1.02        1.02
         30 |          1        0.20        1.22
         40 |          2        0.41        1.63
         50 |          2        0.41        2.04
         60 |          1        0.20        2.24
         70 |          1        0.20        2.45
         80 |          2        0.41        2.86
         90 |          2        0.41        3.27
        100 |          2        0.41        3.67
        110 |          2        0.41        4.08
        120 |          4        0.82        4.90
        130 |          7        1.43        6.33
        140 |          1        0.20        6.53
        150 |          5        1.02        7.55
        160 |          7        1.43        8.98
        170 |          5        1.02       10.00
        180 |          6        1.22       11.22
        190 |          7        1.43       12.65
        200 |          5        1.02       13.67
        210 |          5        1.02       14.69
        220 |          8        1.63       16.33
        230 |          5        1.02       17.35
        240 |         10        2.04       19.39
        250 |          8        1.63       21.02
        260 |          7        1.43       22.45
        270 |          4        0.82       23.27
        280 |          8        1.63       24.90
        290 |          7        1.43       26.33
        300 |          5        1.02       27.35
        310 |         11        2.24       29.59
        320 |         44        8.98       38.57
        330 |         67       13.67       52.24
        340 |         42        8.57       60.82
        350 |         46        9.39       70.20
        360 |         39        7.96       78.16
        370 |         17        3.47       81.63
        380 |         16        3.27       84.90
        390 |         16        3.27       88.16
        400 |          9        1.84       90.00
        410 |         12        2.45       92.45
        420 |          8        1.63       94.08
        430 |         12        2.45       96.53
        440 |          4        0.82       97.35
        450 |          4        0.82       98.16
        460 |          1        0.20       98.37
        470 |          2        0.41       98.78
        480 |          1        0.20       98.98
        500 |          1        0.20       99.18
        520 |          1        0.20       99.39
        540 |          1        0.20       99.59
        660 |          1        0.20       99.80
        690 |          1        0.20      100.00
------------+-----------------------------------
      Total |        490      100.00

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