Frequencies for first 10,000 rows of age variable in nhamcsed2009 dataset :

patient age |
   in years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        325        3.25        3.25
          1 |        272        2.72        5.97
          2 |        187        1.87        7.84
          3 |        155        1.55        9.39
          4 |        154        1.54       10.93
          5 |        126        1.26       12.19
          6 |        117        1.17       13.36
          7 |         84        0.84       14.20
          8 |         88        0.88       15.08
          9 |         98        0.98       16.06
         10 |         93        0.93       16.99
         11 |         73        0.73       17.72
         12 |         80        0.80       18.52
         13 |        101        1.01       19.53
         14 |         99        0.99       20.52
         15 |        117        1.17       21.69
         16 |         92        0.92       22.61
         17 |        114        1.14       23.75
         18 |        153        1.53       25.28
         19 |        161        1.61       26.89
         20 |        170        1.70       28.59
         21 |        148        1.48       30.07
         22 |        176        1.76       31.83
         23 |        164        1.64       33.47
         24 |        157        1.57       35.04
         25 |        159        1.59       36.63
         26 |        166        1.66       38.29
         27 |        164        1.64       39.93
         28 |        170        1.70       41.63
         29 |        170        1.70       43.33
         30 |        131        1.31       44.64
         31 |        163        1.63       46.27
         32 |        146        1.46       47.73
         33 |        127        1.27       49.00
         34 |        122        1.22       50.22
         35 |        116        1.16       51.38
         36 |        114        1.14       52.52
         37 |        136        1.36       53.88
         38 |        147        1.47       55.35
         39 |        130        1.30       56.65
         40 |        126        1.26       57.91
         41 |        137        1.37       59.28
         42 |        127        1.27       60.55
         43 |        118        1.18       61.73
         44 |        147        1.47       63.20
         45 |        138        1.38       64.58
         46 |        145        1.45       66.03
         47 |        164        1.64       67.67
         48 |        130        1.30       68.97
         49 |        137        1.37       70.34
         50 |        120        1.20       71.54
         51 |        127        1.27       72.81
         52 |        105        1.05       73.86
         53 |        111        1.11       74.97
         54 |        126        1.26       76.23
         55 |        113        1.13       77.36
         56 |        106        1.06       78.42
         57 |        113        1.13       79.55
         58 |        106        1.06       80.61
         59 |         87        0.87       81.48
         60 |         92        0.92       82.40
         61 |         68        0.68       83.08
         62 |         83        0.83       83.91
         63 |         77        0.77       84.68
         64 |         72        0.72       85.40
         65 |         75        0.75       86.15
         66 |         64        0.64       86.79
         67 |         66        0.66       87.45
         68 |         54        0.54       87.99
         69 |         53        0.53       88.52
         70 |         66        0.66       89.18
         71 |         61        0.61       89.79
         72 |         65        0.65       90.44
         73 |         66        0.66       91.10
         74 |         51        0.51       91.61
         75 |         64        0.64       92.25
         76 |         52        0.52       92.77
         77 |         50        0.50       93.27
         78 |         58        0.58       93.85
         79 |         71        0.71       94.56
         80 |         58        0.58       95.14
         81 |         46        0.46       95.60
         82 |         43        0.43       96.03
         83 |         38        0.38       96.41
         84 |         55        0.55       96.96
         85 |         43        0.43       97.39
         86 |         42        0.42       97.81
         87 |         40        0.40       98.21
         88 |         38        0.38       98.59
         89 |         34        0.34       98.93
         90 |         19        0.19       99.12
         91 |         15        0.15       99.27
         92 |         13        0.13       99.40
         93 |         17        0.17       99.57
         94 |         13        0.13       99.70
         95 |         11        0.11       99.81
         96 |          3        0.03       99.84
         97 |          4        0.04       99.88
         98 |          4        0.04       99.92
         99 |          3        0.03       99.95
        100 |          5        0.05      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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