Frequencies for first 10,000 rows of age variable in namcs1999 dataset :

    patient age in |
             years |      Freq.     Percent        Cum.
-------------------+-----------------------------------
    Under one year |        159        1.59        1.59
                 1 |        104        1.04        2.63
                 2 |         65        0.65        3.28
                 3 |         50        0.50        3.78
                 4 |         56        0.56        4.34
                 5 |         55        0.55        4.89
                 6 |         74        0.74        5.63
                 7 |         60        0.60        6.23
                 8 |         62        0.62        6.85
                 9 |         70        0.70        7.55
                10 |         67        0.67        8.22
                11 |         80        0.80        9.02
                12 |         71        0.71        9.73
                13 |         80        0.80       10.53
                14 |         75        0.75       11.28
                15 |         92        0.92       12.20
                16 |         93        0.93       13.13
                17 |        102        1.02       14.15
                18 |         90        0.90       15.05
                19 |         82        0.82       15.87
                20 |         78        0.78       16.65
                21 |         70        0.70       17.35
                22 |         73        0.73       18.08
                23 |         81        0.81       18.89
                24 |         80        0.80       19.69
                25 |         77        0.77       20.46
                26 |         72        0.72       21.18
                27 |        122        1.22       22.40
                28 |        100        1.00       23.40
                29 |        114        1.14       24.54
                30 |         92        0.92       25.46
                31 |         97        0.97       26.43
                32 |        119        1.19       27.62
                33 |         98        0.98       28.60
                34 |        146        1.46       30.06
                35 |        146        1.46       31.52
                36 |        143        1.43       32.95
                37 |        149        1.49       34.44
                38 |        147        1.47       35.91
                39 |        127        1.27       37.18
                40 |        139        1.39       38.57
                41 |        151        1.51       40.08
                42 |        153        1.53       41.61
                43 |        160        1.60       43.21
                44 |        160        1.60       44.81
                45 |        152        1.52       46.33
                46 |        173        1.73       48.06
                47 |        168        1.68       49.74
                48 |        170        1.70       51.44
                49 |        154        1.54       52.98
                50 |        147        1.47       54.45
                51 |        173        1.73       56.18
                52 |        163        1.63       57.81
                53 |        150        1.50       59.31
                54 |        137        1.37       60.68
                55 |        136        1.36       62.04
                56 |        138        1.38       63.42
                57 |        130        1.30       64.72
                58 |        144        1.44       66.16
                59 |        138        1.38       67.54
                60 |        116        1.16       68.70
                61 |        120        1.20       69.90
                62 |        116        1.16       71.06
                63 |        112        1.12       72.18
                64 |        123        1.23       73.41
                65 |        112        1.12       74.53
                66 |        118        1.18       75.71
                67 |        130        1.30       77.01
                68 |        135        1.35       78.36
                69 |        155        1.55       79.91
                70 |        116        1.16       81.07
                71 |        133        1.33       82.40
                72 |        128        1.28       83.68
                73 |        127        1.27       84.95
                74 |        138        1.38       86.33
                75 |        142        1.42       87.75
                76 |        138        1.38       89.13
                77 |        137        1.37       90.50
                78 |        130        1.30       91.80
                79 |        100        1.00       92.80
                80 |         91        0.91       93.71
                81 |        104        1.04       94.75
                82 |         88        0.88       95.63
                83 |         89        0.89       96.52
                84 |         77        0.77       97.29
                85 |         62        0.62       97.91
                86 |         48        0.48       98.39
                87 |         40        0.40       98.79
                88 |         35        0.35       99.14
                89 |         30        0.30       99.44
                90 |         17        0.17       99.61
                91 |          8        0.08       99.69
                92 |         12        0.12       99.81
                93 |          3        0.03       99.84
                94 |          5        0.05       99.89
                95 |          5        0.05       99.94
                96 |          2        0.02       99.96
                97 |          1        0.01       99.97
                98 |          1        0.01       99.98
                99 |          1        0.01       99.99
100 years and over |          1        0.01      100.00
-------------------+-----------------------------------
             Total |     10,000      100.00

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