Frequencies for first 10,000 rows of age variable in nhamcsed1993 dataset :

patient age |
   in years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        447        4.47        4.47
          1 |        345        3.45        7.92
          2 |        261        2.61       10.53
          3 |        181        1.81       12.34
          4 |        148        1.48       13.82
          5 |        141        1.41       15.23
          6 |        117        1.17       16.40
          7 |         96        0.96       17.36
          8 |        104        1.04       18.40
          9 |         99        0.99       19.39
         10 |         90        0.90       20.29
         11 |        105        1.05       21.34
         12 |        105        1.05       22.39
         13 |         95        0.95       23.34
         14 |         91        0.91       24.25
         15 |        101        1.01       25.26
         16 |        117        1.17       26.43
         17 |        121        1.21       27.64
         18 |        166        1.66       29.30
         19 |        154        1.54       30.84
         20 |        159        1.59       32.43
         21 |        180        1.80       34.23
         22 |        199        1.99       36.22
         23 |        198        1.98       38.20
         24 |        189        1.89       40.09
         25 |        184        1.84       41.93
         26 |        194        1.94       43.87
         27 |        192        1.92       45.79
         28 |        201        2.01       47.80
         29 |        178        1.78       49.58
         30 |        194        1.94       51.52
         31 |        171        1.71       53.23
         32 |        169        1.69       54.92
         33 |        164        1.64       56.56
         34 |        144        1.44       58.00
         35 |        188        1.88       59.88
         36 |        174        1.74       61.62
         37 |        161        1.61       63.23
         38 |        163        1.63       64.86
         39 |        139        1.39       66.25
         40 |        146        1.46       67.71
         41 |        142        1.42       69.13
         42 |        120        1.20       70.33
         43 |         95        0.95       71.28
         44 |        115        1.15       72.43
         45 |        111        1.11       73.54
         46 |        106        1.06       74.60
         47 |         72        0.72       75.32
         48 |         84        0.84       76.16
         49 |         92        0.92       77.08
         50 |        103        1.03       78.11
         51 |         75        0.75       78.86
         52 |         64        0.64       79.50
         53 |         67        0.67       80.17
         54 |         67        0.67       80.84
         55 |         70        0.70       81.54
         56 |         55        0.55       82.09
         57 |         70        0.70       82.79
         58 |         67        0.67       83.46
         59 |         55        0.55       84.01
         60 |         56        0.56       84.57
         61 |         62        0.62       85.19
         62 |         70        0.70       85.89
         63 |         61        0.61       86.50
         64 |         43        0.43       86.93
         65 |         58        0.58       87.51
         66 |         58        0.58       88.09
         67 |         65        0.65       88.74
         68 |         73        0.73       89.47
         69 |         54        0.54       90.01
         70 |         51        0.51       90.52
         71 |         50        0.50       91.02
         72 |         47        0.47       91.49
         73 |         59        0.59       92.08
         74 |         64        0.64       92.72
         75 |         56        0.56       93.28
         76 |         62        0.62       93.90
         77 |         66        0.66       94.56
         78 |         55        0.55       95.11
         79 |         53        0.53       95.64
         80 |         62        0.62       96.26
         81 |         37        0.37       96.63
         82 |         42        0.42       97.05
         83 |         43        0.43       97.48
         84 |         44        0.44       97.92
         85 |         36        0.36       98.28
         86 |         25        0.25       98.53
         87 |         23        0.23       98.76
         88 |         23        0.23       98.99
         89 |         15        0.15       99.14
         90 |         16        0.16       99.30
         91 |         16        0.16       99.46
         92 |         14        0.14       99.60
         93 |         14        0.14       99.74
         94 |          9        0.09       99.83
         95 |          4        0.04       99.87
         96 |          4        0.04       99.91
         97 |          3        0.03       99.94
         98 |          5        0.05       99.99
         99 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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