Frequencies for first 10,000 rows of amb22d variable in nhamcsopd2003 dataset :

   surgical |
  procedure |
     #2 - 2 |
      digit |      Freq.     Percent        Cum.
------------+-----------------------------------
         00 |      9,704       97.04       97.04
         03 |          9        0.09       97.13
         04 |          1        0.01       97.14
         08 |          2        0.02       97.16
         13 |         10        0.10       97.26
         14 |          1        0.01       97.27
         16 |          8        0.08       97.35
         19 |          1        0.01       97.36
         20 |          4        0.04       97.40
         21 |          8        0.08       97.48
         22 |          3        0.03       97.51
         23 |          2        0.02       97.53
         24 |          1        0.01       97.54
         27 |          2        0.02       97.56
         28 |          2        0.02       97.58
         29 |          1        0.01       97.59
         36 |          2        0.02       97.61
         38 |          4        0.04       97.65
         39 |          1        0.01       97.66
         41 |          1        0.01       97.67
         44 |          1        0.01       97.68
         45 |          5        0.05       97.73
         46 |          1        0.01       97.74
         48 |          2        0.02       97.76
         49 |          3        0.03       97.79
         50 |          1        0.01       97.80
         53 |          3        0.03       97.83
         54 |          1        0.01       97.84
         59 |          2        0.02       97.86
         65 |          7        0.07       97.93
         66 |          2        0.02       97.95
         67 |          3        0.03       97.98
         68 |          8        0.08       98.06
         69 |          3        0.03       98.09
         71 |          2        0.02       98.11
         74 |          1        0.01       98.12
         77 |          5        0.05       98.17
         78 |          3        0.03       98.20
         79 |          1        0.01       98.21
         80 |         16        0.16       98.37
         81 |          6        0.06       98.43
         82 |          3        0.03       98.46
         83 |          3        0.03       98.49
         85 |         17        0.17       98.66
         86 |         32        0.32       98.98
         87 |          1        0.01       98.99
         90 |          1        0.01       99.00
         93 |          5        0.05       99.05
         96 |          3        0.03       99.08
         97 |          4        0.04       99.12
         98 |          2        0.02       99.14
         99 |         86        0.86      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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