Frequencies for first 10,000 rows of age variable in nhamcsed2005 dataset :

    patient age in |
             years |      Freq.     Percent        Cum.
-------------------+-----------------------------------
    under one year |        356        3.56        3.56
                 1 |        298        2.98        6.54
                 2 |        185        1.85        8.39
                 3 |        138        1.38        9.77
                 4 |        135        1.35       11.12
                 5 |        110        1.10       12.22
                 6 |         96        0.96       13.18
                 7 |         79        0.79       13.97
                 8 |         96        0.96       14.93
                 9 |         59        0.59       15.52
                10 |         92        0.92       16.44
                11 |         93        0.93       17.37
                12 |         90        0.90       18.27
                13 |         96        0.96       19.23
                14 |        104        1.04       20.27
                15 |        104        1.04       21.31
                16 |        122        1.22       22.53
                17 |        108        1.08       23.61
                18 |        144        1.44       25.05
                19 |        174        1.74       26.79
                20 |        196        1.96       28.75
                21 |        195        1.95       30.70
                22 |        194        1.94       32.64
                23 |        186        1.86       34.50
                24 |        165        1.65       36.15
                25 |        182        1.82       37.97
                26 |        162        1.62       39.59
                27 |        154        1.54       41.13
                28 |        162        1.62       42.75
                29 |        128        1.28       44.03
                30 |        131        1.31       45.34
                31 |        139        1.39       46.73
                32 |        136        1.36       48.09
                33 |        156        1.56       49.65
                34 |        139        1.39       51.04
                35 |        148        1.48       52.52
                36 |        114        1.14       53.66
                37 |        126        1.26       54.92
                38 |        151        1.51       56.43
                39 |        125        1.25       57.68
                40 |        155        1.55       59.23
                41 |        159        1.59       60.82
                42 |        147        1.47       62.29
                43 |        161        1.61       63.90
                44 |        151        1.51       65.41
                45 |        145        1.45       66.86
                46 |        142        1.42       68.28
                47 |        133        1.33       69.61
                48 |        127        1.27       70.88
                49 |        120        1.20       72.08
                50 |        126        1.26       73.34
                51 |        121        1.21       74.55
                52 |        127        1.27       75.82
                53 |        114        1.14       76.96
                54 |        112        1.12       78.08
                55 |        113        1.13       79.21
                56 |         96        0.96       80.17
                57 |        100        1.00       81.17
                58 |        111        1.11       82.28
                59 |         67        0.67       82.95
                60 |         91        0.91       83.86
                61 |         66        0.66       84.52
                62 |         67        0.67       85.19
                63 |         69        0.69       85.88
                64 |         54        0.54       86.42
                65 |         77        0.77       87.19
                66 |         62        0.62       87.81
                67 |         55        0.55       88.36
                68 |         56        0.56       88.92
                69 |         67        0.67       89.59
                70 |         41        0.41       90.00
                71 |         62        0.62       90.62
                72 |         69        0.69       91.31
                73 |         50        0.50       91.81
                74 |         55        0.55       92.36
                75 |         63        0.63       92.99
                76 |         61        0.61       93.60
                77 |         55        0.55       94.15
                78 |         56        0.56       94.71
                79 |         56        0.56       95.27
                80 |         52        0.52       95.79
                81 |         29        0.29       96.08
                82 |         46        0.46       96.54
                83 |         54        0.54       97.08
                84 |         40        0.40       97.48
                85 |         32        0.32       97.80
                86 |         44        0.44       98.24
                87 |         30        0.30       98.54
                88 |         33        0.33       98.87
                89 |         14        0.14       99.01
                90 |         22        0.22       99.23
                91 |         20        0.20       99.43
                92 |         13        0.13       99.56
                93 |          9        0.09       99.65
                94 |         12        0.12       99.77
                95 |          8        0.08       99.85
                96 |          4        0.04       99.89
                97 |          5        0.05       99.94
                98 |          2        0.02       99.96
                99 |          2        0.02       99.98
100 years and over |          2        0.02      100.00
-------------------+-----------------------------------
             Total |     10,000      100.00

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