Frequencies for first 10,000 rows of age variable in namcs1995 dataset :

patient age |
   in years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        171        1.71        1.71
          1 |        109        1.09        2.80
          2 |         84        0.84        3.64
          3 |         69        0.69        4.33
          4 |         77        0.77        5.10
          5 |         62        0.62        5.72
          6 |         59        0.59        6.31
          7 |         59        0.59        6.90
          8 |         52        0.52        7.42
          9 |         51        0.51        7.93
         10 |         48        0.48        8.41
         11 |         62        0.62        9.03
         12 |         66        0.66        9.69
         13 |         70        0.70       10.39
         14 |         72        0.72       11.11
         15 |         81        0.81       11.92
         16 |         93        0.93       12.85
         17 |         98        0.98       13.83
         18 |         77        0.77       14.60
         19 |         71        0.71       15.31
         20 |         73        0.73       16.04
         21 |         80        0.80       16.84
         22 |         90        0.90       17.74
         23 |         75        0.75       18.49
         24 |        114        1.14       19.63
         25 |         91        0.91       20.54
         26 |         91        0.91       21.45
         27 |        105        1.05       22.50
         28 |        110        1.10       23.60
         29 |        113        1.13       24.73
         30 |        132        1.32       26.05
         31 |        136        1.36       27.41
         32 |        130        1.30       28.71
         33 |        123        1.23       29.94
         34 |        178        1.78       31.72
         35 |        150        1.50       33.22
         36 |        163        1.63       34.85
         37 |        174        1.74       36.59
         38 |        151        1.51       38.10
         39 |        153        1.53       39.63
         40 |        161        1.61       41.24
         41 |        142        1.42       42.66
         42 |        140        1.40       44.06
         43 |        136        1.36       45.42
         44 |        137        1.37       46.79
         45 |        148        1.48       48.27
         46 |        139        1.39       49.66
         47 |        152        1.52       51.18
         48 |        174        1.74       52.92
         49 |        146        1.46       54.38
         50 |        143        1.43       55.81
         51 |        147        1.47       57.28
         52 |        130        1.30       58.58
         53 |        116        1.16       59.74
         54 |        114        1.14       60.88
         55 |        130        1.30       62.18
         56 |        107        1.07       63.25
         57 |        122        1.22       64.47
         58 |        123        1.23       65.70
         59 |        124        1.24       66.94
         60 |        120        1.20       68.14
         61 |        120        1.20       69.34
         62 |        105        1.05       70.39
         63 |        111        1.11       71.50
         64 |        119        1.19       72.69
         65 |        133        1.33       74.02
         66 |        123        1.23       75.25
         67 |        141        1.41       76.66
         68 |        151        1.51       78.17
         69 |        139        1.39       79.56
         70 |        147        1.47       81.03
         71 |        165        1.65       82.68
         72 |        160        1.60       84.28
         73 |        144        1.44       85.72
         74 |        157        1.57       87.29
         75 |        146        1.46       88.75
         76 |        130        1.30       90.05
         77 |        119        1.19       91.24
         78 |        115        1.15       92.39
         79 |        107        1.07       93.46
         80 |        101        1.01       94.47
         81 |         81        0.81       95.28
         82 |         82        0.82       96.10
         83 |         62        0.62       96.72
         84 |         74        0.74       97.46
         85 |         60        0.60       98.06
         86 |         43        0.43       98.49
         87 |         27        0.27       98.76
         88 |         22        0.22       98.98
         89 |         18        0.18       99.16
         90 |         22        0.22       99.38
         91 |         17        0.17       99.55
         92 |         15        0.15       99.70
         93 |         12        0.12       99.82
         94 |          6        0.06       99.88
         95 |          6        0.06       99.94
         96 |          2        0.02       99.96
         98 |          1        0.01       99.97
         99 |          2        0.02       99.99
        101 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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