Frequencies for first 10,000 rows of age variable in namcs2005 dataset :

    patient age in |
             years |      Freq.     Percent        Cum.
-------------------+-----------------------------------
    Under one year |        619        6.19        6.19
                 1 |        354        3.54        9.73
                 2 |        188        1.88       11.61
                 3 |        185        1.85       13.46
                 4 |        202        2.02       15.48
                 5 |        199        1.99       17.47
                 6 |        172        1.72       19.19
                 7 |        116        1.16       20.35
                 8 |        108        1.08       21.43
                 9 |        113        1.13       22.56
                10 |        121        1.21       23.77
                11 |        110        1.10       24.87
                12 |        125        1.25       26.12
                13 |        129        1.29       27.41
                14 |        140        1.40       28.81
                15 |        115        1.15       29.96
                16 |        117        1.17       31.13
                17 |        110        1.10       32.23
                18 |         78        0.78       33.01
                19 |         38        0.38       33.39
                20 |         62        0.62       34.01
                21 |         51        0.51       34.52
                22 |         60        0.60       35.12
                23 |         55        0.55       35.67
                24 |         49        0.49       36.16
                25 |         60        0.60       36.76
                26 |         69        0.69       37.45
                27 |         60        0.60       38.05
                28 |         75        0.75       38.80
                29 |         66        0.66       39.46
                30 |         58        0.58       40.04
                31 |         80        0.80       40.84
                32 |         70        0.70       41.54
                33 |         68        0.68       42.22
                34 |         81        0.81       43.03
                35 |         91        0.91       43.94
                36 |         92        0.92       44.86
                37 |         94        0.94       45.80
                38 |        101        1.01       46.81
                39 |         93        0.93       47.74
                40 |        114        1.14       48.88
                41 |        100        1.00       49.88
                42 |        128        1.28       51.16
                43 |        146        1.46       52.62
                44 |        120        1.20       53.82
                45 |        135        1.35       55.17
                46 |        117        1.17       56.34
                47 |        129        1.29       57.63
                48 |        146        1.46       59.09
                49 |        109        1.09       60.18
                50 |        156        1.56       61.74
                51 |        143        1.43       63.17
                52 |        130        1.30       64.47
                53 |        143        1.43       65.90
                54 |        146        1.46       67.36
                55 |        145        1.45       68.81
                56 |        137        1.37       70.18
                57 |        137        1.37       71.55
                58 |        146        1.46       73.01
                59 |        121        1.21       74.22
                60 |         99        0.99       75.21
                61 |        125        1.25       76.46
                62 |        139        1.39       77.85
                63 |        108        1.08       78.93
                64 |        113        1.13       80.06
                65 |        110        1.10       81.16
                66 |        103        1.03       82.19
                67 |        106        1.06       83.25
                68 |         89        0.89       84.14
                69 |         88        0.88       85.02
                70 |        113        1.13       86.15
                71 |         95        0.95       87.10
                72 |        106        1.06       88.16
                73 |         78        0.78       88.94
                74 |         85        0.85       89.79
                75 |         90        0.90       90.69
                76 |         78        0.78       91.47
                77 |         80        0.80       92.27
                78 |         92        0.92       93.19
                79 |         89        0.89       94.08
                80 |         74        0.74       94.82
                81 |         92        0.92       95.74
                82 |         57        0.57       96.31
                83 |         67        0.67       96.98
                84 |         61        0.61       97.59
                85 |         39        0.39       97.98
                86 |         50        0.50       98.48
                87 |         31        0.31       98.79
                88 |         30        0.30       99.09
                89 |         21        0.21       99.30
                90 |         20        0.20       99.50
                91 |         11        0.11       99.61
                92 |         12        0.12       99.73
                93 |          8        0.08       99.81
                94 |         10        0.10       99.91
                95 |          5        0.05       99.96
                96 |          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