Frequencies for first 10,000 rows of age variable in namcs1996 dataset :

patient age |
   in years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        259        2.59        2.59
          1 |        187        1.87        4.46
          2 |        117        1.17        5.63
          3 |         93        0.93        6.56
          4 |         96        0.96        7.52
          5 |        105        1.05        8.57
          6 |         81        0.81        9.38
          7 |         67        0.67       10.05
          8 |         66        0.66       10.71
          9 |         60        0.60       11.31
         10 |         53        0.53       11.84
         11 |         66        0.66       12.50
         12 |         59        0.59       13.09
         13 |         70        0.70       13.79
         14 |         79        0.79       14.58
         15 |         76        0.76       15.34
         16 |         81        0.81       16.15
         17 |         70        0.70       16.85
         18 |         60        0.60       17.45
         19 |         64        0.64       18.09
         20 |         60        0.60       18.69
         21 |         70        0.70       19.39
         22 |         62        0.62       20.01
         23 |         96        0.96       20.97
         24 |         67        0.67       21.64
         25 |         78        0.78       22.42
         26 |         83        0.83       23.25
         27 |         89        0.89       24.14
         28 |         81        0.81       24.95
         29 |         86        0.86       25.81
         30 |         90        0.90       26.71
         31 |        131        1.31       28.02
         32 |        121        1.21       29.23
         33 |        114        1.14       30.37
         34 |        124        1.24       31.61
         35 |        132        1.32       32.93
         36 |        124        1.24       34.17
         37 |        132        1.32       35.49
         38 |        145        1.45       36.94
         39 |        134        1.34       38.28
         40 |        126        1.26       39.54
         41 |        141        1.41       40.95
         42 |        157        1.57       42.52
         43 |        138        1.38       43.90
         44 |        144        1.44       45.34
         45 |        118        1.18       46.52
         46 |        138        1.38       47.90
         47 |        136        1.36       49.26
         48 |        167        1.67       50.93
         49 |        165        1.65       52.58
         50 |        115        1.15       53.73
         51 |        139        1.39       55.12
         52 |        137        1.37       56.49
         53 |        134        1.34       57.83
         54 |        135        1.35       59.18
         55 |        116        1.16       60.34
         56 |        140        1.40       61.74
         57 |        125        1.25       62.99
         58 |        121        1.21       64.20
         59 |        114        1.14       65.34
         60 |        121        1.21       66.55
         61 |        102        1.02       67.57
         62 |        107        1.07       68.64
         63 |        121        1.21       69.85
         64 |        103        1.03       70.88
         65 |        130        1.30       72.18
         66 |        152        1.52       73.70
         67 |        145        1.45       75.15
         68 |        148        1.48       76.63
         69 |        159        1.59       78.22
         70 |        169        1.69       79.91
         71 |        165        1.65       81.56
         72 |        137        1.37       82.93
         73 |        140        1.40       84.33
         74 |        160        1.60       85.93
         75 |        169        1.69       87.62
         76 |        133        1.33       88.95
         77 |        136        1.36       90.31
         78 |        112        1.12       91.43
         79 |        111        1.11       92.54
         80 |        111        1.11       93.65
         81 |         90        0.90       94.55
         82 |         90        0.90       95.45
         83 |         68        0.68       96.13
         84 |         73        0.73       96.86
         85 |         65        0.65       97.51
         86 |         58        0.58       98.09
         87 |         36        0.36       98.45
         88 |         44        0.44       98.89
         89 |         27        0.27       99.16
         90 |         20        0.20       99.36
         91 |         19        0.19       99.55
         92 |         15        0.15       99.70
         93 |          8        0.08       99.78
         94 |         10        0.10       99.88
         95 |          3        0.03       99.91
         96 |          6        0.06       99.97
         97 |          2        0.02       99.99
         98 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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