Frequencies for first 10,000 rows of age variable in namcs2008 dataset :

    patient age in |
             years |      Freq.     Percent        Cum.
-------------------+-----------------------------------
    under one year |        604        6.04        6.04
                 1 |        330        3.30        9.34
                 2 |        226        2.26       11.60
                 3 |        198        1.98       13.58
                 4 |        171        1.71       15.29
                 5 |        161        1.61       16.90
                 6 |        134        1.34       18.24
                 7 |        128        1.28       19.52
                 8 |        115        1.15       20.67
                 9 |        119        1.19       21.86
                10 |        107        1.07       22.93
                11 |        111        1.11       24.04
                12 |        123        1.23       25.27
                13 |         95        0.95       26.22
                14 |        127        1.27       27.49
                15 |        114        1.14       28.63
                16 |        115        1.15       29.78
                17 |        105        1.05       30.83
                18 |         89        0.89       31.72
                19 |         75        0.75       32.47
                20 |         57        0.57       33.04
                21 |         50        0.50       33.54
                22 |         54        0.54       34.08
                23 |         77        0.77       34.85
                24 |         59        0.59       35.44
                25 |         74        0.74       36.18
                26 |         68        0.68       36.86
                27 |         66        0.66       37.52
                28 |         77        0.77       38.29
                29 |         75        0.75       39.04
                30 |         75        0.75       39.79
                31 |         84        0.84       40.63
                32 |         95        0.95       41.58
                33 |         61        0.61       42.19
                34 |         92        0.92       43.11
                35 |         86        0.86       43.97
                36 |         89        0.89       44.86
                37 |        104        1.04       45.90
                38 |         98        0.98       46.88
                39 |         94        0.94       47.82
                40 |        114        1.14       48.96
                41 |         96        0.96       49.92
                42 |        109        1.09       51.01
                43 |         99        0.99       52.00
                44 |        110        1.10       53.10
                45 |        123        1.23       54.33
                46 |        122        1.22       55.55
                47 |        119        1.19       56.74
                48 |        129        1.29       58.03
                49 |        135        1.35       59.38
                50 |        112        1.12       60.50
                51 |        147        1.47       61.97
                52 |        148        1.48       63.45
                53 |        145        1.45       64.90
                54 |        135        1.35       66.25
                55 |        126        1.26       67.51
                56 |        128        1.28       68.79
                57 |        129        1.29       70.08
                58 |        158        1.58       71.66
                59 |        145        1.45       73.11
                60 |        139        1.39       74.50
                61 |        145        1.45       75.95
                62 |        100        1.00       76.95
                63 |        104        1.04       77.99
                64 |        131        1.31       79.30
                65 |        124        1.24       80.54
                66 |        118        1.18       81.72
                67 |        128        1.28       83.00
                68 |         95        0.95       83.95
                69 |        105        1.05       85.00
                70 |        107        1.07       86.07
                71 |         93        0.93       87.00
                72 |         90        0.90       87.90
                73 |         84        0.84       88.74
                74 |         90        0.90       89.64
                75 |         83        0.83       90.47
                76 |         75        0.75       91.22
                77 |         89        0.89       92.11
                78 |         88        0.88       92.99
                79 |         87        0.87       93.86
                80 |         85        0.85       94.71
                81 |         69        0.69       95.40
                82 |         57        0.57       95.97
                83 |         59        0.59       96.56
                84 |         67        0.67       97.23
                85 |         65        0.65       97.88
                86 |         44        0.44       98.32
                87 |         37        0.37       98.69
                88 |         25        0.25       98.94
                89 |         29        0.29       99.23
                90 |         23        0.23       99.46
                91 |         15        0.15       99.61
                92 |         17        0.17       99.78
                93 |          3        0.03       99.81
                94 |          9        0.09       99.90
                95 |          2        0.02       99.92
                96 |          4        0.04       99.96
                97 |          2        0.02       99.98
                98 |          1        0.01       99.99
                99 |          1        0.01      100.00
-------------------+-----------------------------------
             Total |     10,000      100.00

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