Frequencies for first 10,000 rows of age variable in nhamcsed1995 dataset :

patient age |
   in years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        427        4.27        4.27
          1 |        335        3.35        7.62
          2 |        250        2.50       10.12
          3 |        177        1.77       11.89
          4 |        170        1.70       13.59
          5 |        135        1.35       14.94
          6 |        126        1.26       16.20
          7 |        112        1.12       17.32
          8 |         91        0.91       18.23
          9 |        115        1.15       19.38
         10 |         88        0.88       20.26
         11 |         84        0.84       21.10
         12 |        102        1.02       22.12
         13 |         84        0.84       22.96
         14 |         91        0.91       23.87
         15 |        100        1.00       24.87
         16 |        120        1.20       26.07
         17 |        126        1.26       27.33
         18 |        149        1.49       28.82
         19 |        146        1.46       30.28
         20 |        160        1.60       31.88
         21 |        175        1.75       33.63
         22 |        152        1.52       35.15
         23 |        204        2.04       37.19
         24 |        174        1.74       38.93
         25 |        194        1.94       40.87
         26 |        178        1.78       42.65
         27 |        176        1.76       44.41
         28 |        168        1.68       46.09
         29 |        162        1.62       47.71
         30 |        171        1.71       49.42
         31 |        185        1.85       51.27
         32 |        178        1.78       53.05
         33 |        167        1.67       54.72
         34 |        175        1.75       56.47
         35 |        166        1.66       58.13
         36 |        187        1.87       60.00
         37 |        157        1.57       61.57
         38 |        152        1.52       63.09
         39 |        148        1.48       64.57
         40 |        142        1.42       65.99
         41 |        153        1.53       67.52
         42 |        112        1.12       68.64
         43 |        119        1.19       69.83
         44 |        133        1.33       71.16
         45 |        115        1.15       72.31
         46 |        109        1.09       73.40
         47 |        104        1.04       74.44
         48 |        111        1.11       75.55
         49 |         77        0.77       76.32
         50 |         90        0.90       77.22
         51 |         85        0.85       78.07
         52 |         82        0.82       78.89
         53 |         77        0.77       79.66
         54 |         83        0.83       80.49
         55 |         53        0.53       81.02
         56 |         70        0.70       81.72
         57 |         53        0.53       82.25
         58 |         52        0.52       82.77
         59 |         56        0.56       83.33
         60 |         52        0.52       83.85
         61 |         60        0.60       84.45
         62 |         69        0.69       85.14
         63 |         50        0.50       85.64
         64 |         57        0.57       86.21
         65 |         49        0.49       86.70
         66 |         55        0.55       87.25
         67 |         58        0.58       87.83
         68 |         61        0.61       88.44
         69 |         66        0.66       89.10
         70 |         61        0.61       89.71
         71 |         61        0.61       90.32
         72 |         64        0.64       90.96
         73 |         55        0.55       91.51
         74 |         56        0.56       92.07
         75 |         44        0.44       92.51
         76 |         56        0.56       93.07
         77 |         59        0.59       93.66
         78 |         55        0.55       94.21
         79 |         45        0.45       94.66
         80 |         55        0.55       95.21
         81 |         51        0.51       95.72
         82 |         47        0.47       96.19
         83 |         38        0.38       96.57
         84 |         59        0.59       97.16
         85 |         45        0.45       97.61
         86 |         25        0.25       97.86
         87 |         28        0.28       98.14
         88 |         34        0.34       98.48
         89 |         34        0.34       98.82
         90 |         20        0.20       99.02
         91 |         30        0.30       99.32
         92 |         25        0.25       99.57
         93 |          7        0.07       99.64
         94 |         14        0.14       99.78
         95 |          8        0.08       99.86
         96 |          4        0.04       99.90
         98 |          3        0.03       99.93
         99 |          3        0.03       99.96
        100 |          2        0.02       99.98
        104 |          1        0.01       99.99
        107 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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