Frequencies for first 10,000 rows of age variable in namcs1998 dataset :

    patient age in |
             years |      Freq.     Percent        Cum.
-------------------+-----------------------------------
    Under one year |        537        5.37        5.37
                 1 |        309        3.09        8.46
                 2 |        214        2.14       10.60
                 3 |        189        1.89       12.49
                 4 |        189        1.89       14.38
                 5 |        170        1.70       16.08
                 6 |        145        1.45       17.53
                 7 |        119        1.19       18.72
                 8 |        146        1.46       20.18
                 9 |        100        1.00       21.18
                10 |        118        1.18       22.36
                11 |        125        1.25       23.61
                12 |        119        1.19       24.80
                13 |        112        1.12       25.92
                14 |         99        0.99       26.91
                15 |        110        1.10       28.01
                16 |        113        1.13       29.14
                17 |        120        1.20       30.34
                18 |         73        0.73       31.07
                19 |         69        0.69       31.76
                20 |         64        0.64       32.40
                21 |         62        0.62       33.02
                22 |         56        0.56       33.58
                23 |         74        0.74       34.32
                24 |         72        0.72       35.04
                25 |         77        0.77       35.81
                26 |        113        1.13       36.94
                27 |         95        0.95       37.89
                28 |         93        0.93       38.82
                29 |         93        0.93       39.75
                30 |         97        0.97       40.72
                31 |        100        1.00       41.72
                32 |        114        1.14       42.86
                33 |         95        0.95       43.81
                34 |         92        0.92       44.73
                35 |        127        1.27       46.00
                36 |         96        0.96       46.96
                37 |        112        1.12       48.08
                38 |        108        1.08       49.16
                39 |        124        1.24       50.40
                40 |        122        1.22       51.62
                41 |        118        1.18       52.80
                42 |        116        1.16       53.96
                43 |        123        1.23       55.19
                44 |        129        1.29       56.48
                45 |        117        1.17       57.65
                46 |        141        1.41       59.06
                47 |        110        1.10       60.16
                48 |        130        1.30       61.46
                49 |        135        1.35       62.81
                50 |        150        1.50       64.31
                51 |        147        1.47       65.78
                52 |         95        0.95       66.73
                53 |        110        1.10       67.83
                54 |        117        1.17       69.00
                55 |        127        1.27       70.27
                56 |        134        1.34       71.61
                57 |         96        0.96       72.57
                58 |        105        1.05       73.62
                59 |        105        1.05       74.67
                60 |         88        0.88       75.55
                61 |         84        0.84       76.39
                62 |         89        0.89       77.28
                63 |        102        1.02       78.30
                64 |         99        0.99       79.29
                65 |         94        0.94       80.23
                66 |        114        1.14       81.37
                67 |        108        1.08       82.45
                68 |        114        1.14       83.59
                69 |        112        1.12       84.71
                70 |         97        0.97       85.68
                71 |        108        1.08       86.76
                72 |        121        1.21       87.97
                73 |        110        1.10       89.07
                74 |        119        1.19       90.26
                75 |         92        0.92       91.18
                76 |        102        1.02       92.20
                77 |         94        0.94       93.14
                78 |         89        0.89       94.03
                79 |         72        0.72       94.75
                80 |         67        0.67       95.42
                81 |         77        0.77       96.19
                82 |         70        0.70       96.89
                83 |         62        0.62       97.51
                84 |         37        0.37       97.88
                85 |         36        0.36       98.24
                86 |         32        0.32       98.56
                87 |         39        0.39       98.95
                88 |         28        0.28       99.23
                89 |         14        0.14       99.37
                90 |         18        0.18       99.55
                91 |         13        0.13       99.68
                92 |          9        0.09       99.77
                93 |          8        0.08       99.85
                94 |          4        0.04       99.89
                95 |          4        0.04       99.93
                96 |          3        0.03       99.96
                97 |          1        0.01       99.97
                98 |          1        0.01       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