Frequencies for first 10,000 rows of amb12 variable in nhamcsopd1995 dataset :

 ambulatory |
   surgical |
proc #1 - 2 |
        dgt |      Freq.     Percent        Cum.
------------+-----------------------------------
         00 |      9,406       94.06       94.06
         03 |         22        0.22       94.28
         04 |          2        0.02       94.30
         06 |          1        0.01       94.31
         08 |          9        0.09       94.40
         12 |          8        0.08       94.48
         13 |         55        0.55       95.03
         14 |          8        0.08       95.11
         16 |          3        0.03       95.14
         18 |          1        0.01       95.15
         21 |          1        0.01       95.16
         22 |          1        0.01       95.17
         23 |          2        0.02       95.19
         27 |          3        0.03       95.22
         28 |          5        0.05       95.27
         31 |          2        0.02       95.29
         33 |          5        0.05       95.34
         34 |          1        0.01       95.35
         37 |          3        0.03       95.38
         38 |         10        0.10       95.48
         39 |         11        0.11       95.59
         40 |          2        0.02       95.61
         41 |          2        0.02       95.63
         42 |          3        0.03       95.66
         44 |          4        0.04       95.70
         45 |         97        0.97       96.67
         48 |          8        0.08       96.75
         49 |          4        0.04       96.79
         51 |          5        0.05       96.84
         52 |          1        0.01       96.85
         53 |          5        0.05       96.90
         54 |          7        0.07       96.97
         55 |          2        0.02       96.99
         57 |         19        0.19       97.18
         58 |          1        0.01       97.19
         60 |          2        0.02       97.21
         63 |          1        0.01       97.22
         65 |          1        0.01       97.23
         66 |          3        0.03       97.26
         67 |          3        0.03       97.29
         68 |          6        0.06       97.35
         69 |          7        0.07       97.42
         70 |         13        0.13       97.55
         71 |          2        0.02       97.57
         75 |         14        0.14       97.71
         77 |          2        0.02       97.73
         78 |          4        0.04       97.77
         79 |          5        0.05       97.82
         80 |         10        0.10       97.92
         81 |         16        0.16       98.08
         83 |          3        0.03       98.11
         84 |          1        0.01       98.12
         85 |         16        0.16       98.28
         86 |         68        0.68       98.96
         88 |          1        0.01       98.97
         89 |          1        0.01       98.98
         90 |          1        0.01       98.99
         93 |         11        0.11       99.10
         96 |          6        0.06       99.16
         97 |         61        0.61       99.77
         98 |          4        0.04       99.81
         99 |         19        0.19      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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