Frequencies for first 10,000 rows of amb12d variable in nhamcsopd2002 dataset :

   surgical |
  procedure |
     #1 - 2 |
      digit |      Freq.     Percent        Cum.
------------+-----------------------------------
         00 |      9,258       92.58       92.58
         03 |         21        0.21       92.79
         04 |          3        0.03       92.82
         06 |          4        0.04       92.86
         07 |          1        0.01       92.87
         08 |          4        0.04       92.91
         09 |          1        0.01       92.92
         10 |          1        0.01       92.93
         11 |          1        0.01       92.94
         12 |          3        0.03       92.97
         13 |         22        0.22       93.19
         14 |          7        0.07       93.26
         18 |          5        0.05       93.31
         19 |          2        0.02       93.33
         20 |          4        0.04       93.37
         21 |          3        0.03       93.40
         22 |          1        0.01       93.41
         23 |          4        0.04       93.45
         26 |          2        0.02       93.47
         27 |          2        0.02       93.49
         28 |          4        0.04       93.53
         31 |          1        0.01       93.54
         32 |          1        0.01       93.55
         33 |          2        0.02       93.57
         34 |          1        0.01       93.58
         35 |          1        0.01       93.59
         37 |          8        0.08       93.67
         38 |         11        0.11       93.78
         39 |         15        0.15       93.93
         40 |          4        0.04       93.97
         41 |          3        0.03       94.00
         44 |          2        0.02       94.02
         45 |          4        0.04       94.06
         47 |          1        0.01       94.07
         48 |          1        0.01       94.08
         49 |          6        0.06       94.14
         50 |          4        0.04       94.18
         51 |          6        0.06       94.24
         53 |         16        0.16       94.40
         54 |         10        0.10       94.50
         55 |          3        0.03       94.53
         57 |          6        0.06       94.59
         58 |          1        0.01       94.60
         60 |          9        0.09       94.69
         61 |          1        0.01       94.70
         62 |          1        0.01       94.71
         63 |          3        0.03       94.74
         64 |          4        0.04       94.78
         65 |         26        0.26       95.04
         66 |          7        0.07       95.11
         67 |         19        0.19       95.30
         68 |         28        0.28       95.58
         69 |         31        0.31       95.89
         70 |          4        0.04       95.93
         71 |          9        0.09       96.02
         73 |          4        0.04       96.06
         74 |          1        0.01       96.07
         75 |          2        0.02       96.09
         76 |          1        0.01       96.10
         77 |          6        0.06       96.16
         78 |          1        0.01       96.17
         79 |         12        0.12       96.29
         80 |         10        0.10       96.39
         81 |         20        0.20       96.59
         82 |          7        0.07       96.66
         83 |          6        0.06       96.72
         85 |         26        0.26       96.98
         86 |         72        0.72       97.70
         87 |          1        0.01       97.71
         88 |          3        0.03       97.74
         89 |          2        0.02       97.76
         90 |          1        0.01       97.77
         91 |          2        0.02       97.79
         92 |          1        0.01       97.80
         93 |         55        0.55       98.35
         95 |         11        0.11       98.46
         96 |         14        0.14       98.60
         97 |         61        0.61       99.21
         98 |          7        0.07       99.28
         99 |         72        0.72      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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