Frequencies for first 10,000 rows of age variable in namcs2002 dataset :

    Patient age in |
             years |      Freq.     Percent        Cum.
-------------------+-----------------------------------
    Under one year |        255        2.55        2.55
                 1 |        201        2.01        4.56
                 2 |        105        1.05        5.61
                 3 |        133        1.33        6.94
                 4 |        111        1.11        8.05
                 5 |        106        1.06        9.11
                 6 |         92        0.92       10.03
                 7 |         95        0.95       10.98
                 8 |         79        0.79       11.77
                 9 |         96        0.96       12.73
                10 |         85        0.85       13.58
                11 |         87        0.87       14.45
                12 |         75        0.75       15.20
                13 |         97        0.97       16.17
                14 |         86        0.86       17.03
                15 |         89        0.89       17.92
                16 |         94        0.94       18.86
                17 |         89        0.89       19.75
                18 |         84        0.84       20.59
                19 |         72        0.72       21.31
                20 |         64        0.64       21.95
                21 |         75        0.75       22.70
                22 |         56        0.56       23.26
                23 |         71        0.71       23.97
                24 |         80        0.80       24.77
                25 |         87        0.87       25.64
                26 |         80        0.80       26.44
                27 |         79        0.79       27.23
                28 |         83        0.83       28.06
                29 |         82        0.82       28.88
                30 |         91        0.91       29.79
                31 |        117        1.17       30.96
                32 |        107        1.07       32.03
                33 |        116        1.16       33.19
                34 |        100        1.00       34.19
                35 |        111        1.11       35.30
                36 |        106        1.06       36.36
                37 |         95        0.95       37.31
                38 |        111        1.11       38.42
                39 |        133        1.33       39.75
                40 |        119        1.19       40.94
                41 |        147        1.47       42.41
                42 |        131        1.31       43.72
                43 |        126        1.26       44.98
                44 |        137        1.37       46.35
                45 |        125        1.25       47.60
                46 |        151        1.51       49.11
                47 |        136        1.36       50.47
                48 |        152        1.52       51.99
                49 |        158        1.58       53.57
                50 |        129        1.29       54.86
                51 |        135        1.35       56.21
                52 |        163        1.63       57.84
                53 |        146        1.46       59.30
                54 |        181        1.81       61.11
                55 |        146        1.46       62.57
                56 |        113        1.13       63.70
                57 |        137        1.37       65.07
                58 |        136        1.36       66.43
                59 |        140        1.40       67.83
                60 |        127        1.27       69.10
                61 |        123        1.23       70.33
                62 |        128        1.28       71.61
                63 |        126        1.26       72.87
                64 |        124        1.24       74.11
                65 |        116        1.16       75.27
                66 |        139        1.39       76.66
                67 |        129        1.29       77.95
                68 |        117        1.17       79.12
                69 |        126        1.26       80.38
                70 |        120        1.20       81.58
                71 |        140        1.40       82.98
                72 |        125        1.25       84.23
                73 |        121        1.21       85.44
                74 |        141        1.41       86.85
                75 |         96        0.96       87.81
                76 |        115        1.15       88.96
                77 |        115        1.15       90.11
                78 |        126        1.26       91.37
                79 |        122        1.22       92.59
                80 |        105        1.05       93.64
                81 |         98        0.98       94.62
                82 |         83        0.83       95.45
                83 |         79        0.79       96.24
                84 |         65        0.65       96.89
                85 |         52        0.52       97.41
                86 |         46        0.46       97.87
                87 |         35        0.35       98.22
                88 |         36        0.36       98.58
                89 |         31        0.31       98.89
                90 |         32        0.32       99.21
                91 |         29        0.29       99.50
                92 |         13        0.13       99.63
                93 |          8        0.08       99.71
                94 |          7        0.07       99.78
                95 |          3        0.03       99.81
                96 |          7        0.07       99.88
                97 |          2        0.02       99.90
                98 |          1        0.01       99.91
                99 |          1        0.01       99.92
100 years and over |          8        0.08      100.00
-------------------+-----------------------------------
             Total |     10,000      100.00

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