Frequencies for first 10,000 rows of age variable in namcs2001 dataset :

    patient age in |
             years |      Freq.     Percent        Cum.
-------------------+-----------------------------------
    Under one year |        241        2.41        2.41
                 1 |        185        1.85        4.26
                 2 |         90        0.90        5.16
                 3 |         85        0.85        6.01
                 4 |         91        0.91        6.92
                 5 |         76        0.76        7.68
                 6 |         69        0.69        8.37
                 7 |         76        0.76        9.13
                 8 |         94        0.94       10.07
                 9 |         73        0.73       10.80
                10 |         78        0.78       11.58
                11 |         65        0.65       12.23
                12 |         73        0.73       12.96
                13 |         68        0.68       13.64
                14 |         75        0.75       14.39
                15 |         82        0.82       15.21
                16 |         76        0.76       15.97
                17 |         87        0.87       16.84
                18 |         71        0.71       17.55
                19 |         52        0.52       18.07
                20 |         79        0.79       18.86
                21 |         64        0.64       19.50
                22 |         62        0.62       20.12
                23 |         53        0.53       20.65
                24 |         67        0.67       21.32
                25 |         61        0.61       21.93
                26 |         88        0.88       22.81
                27 |         79        0.79       23.60
                28 |         89        0.89       24.49
                29 |         96        0.96       25.45
                30 |         93        0.93       26.38
                31 |        115        1.15       27.53
                32 |        101        1.01       28.54
                33 |         81        0.81       29.35
                34 |        110        1.10       30.45
                35 |        124        1.24       31.69
                36 |        117        1.17       32.86
                37 |        141        1.41       34.27
                38 |        143        1.43       35.70
                39 |        128        1.28       36.98
                40 |        146        1.46       38.44
                41 |        132        1.32       39.76
                42 |        120        1.20       40.96
                43 |        150        1.50       42.46
                44 |        142        1.42       43.88
                45 |        152        1.52       45.40
                46 |        141        1.41       46.81
                47 |        163        1.63       48.44
                48 |        185        1.85       50.29
                49 |        142        1.42       51.71
                50 |        145        1.45       53.16
                51 |        134        1.34       54.50
                52 |        162        1.62       56.12
                53 |        161        1.61       57.73
                54 |        166        1.66       59.39
                55 |        141        1.41       60.80
                56 |        146        1.46       62.26
                57 |        125        1.25       63.51
                58 |        158        1.58       65.09
                59 |        127        1.27       66.36
                60 |        127        1.27       67.63
                61 |        111        1.11       68.74
                62 |        131        1.31       70.05
                63 |        122        1.22       71.27
                64 |        106        1.06       72.33
                65 |        101        1.01       73.34
                66 |        121        1.21       74.55
                67 |        127        1.27       75.82
                68 |        147        1.47       77.29
                69 |        133        1.33       78.62
                70 |        138        1.38       80.00
                71 |        145        1.45       81.45
                72 |        141        1.41       82.86
                73 |        135        1.35       84.21
                74 |        171        1.71       85.92
                75 |        121        1.21       87.13
                76 |        128        1.28       88.41
                77 |        146        1.46       89.87
                78 |        138        1.38       91.25
                79 |        130        1.30       92.55
                80 |        115        1.15       93.70
                81 |        101        1.01       94.71
                82 |         80        0.80       95.51
                83 |         75        0.75       96.26
                84 |         73        0.73       96.99
                85 |         48        0.48       97.47
                86 |         49        0.49       97.96
                87 |         37        0.37       98.33
                88 |         38        0.38       98.71
                89 |         38        0.38       99.09
                90 |         19        0.19       99.28
                91 |         19        0.19       99.47
                92 |         15        0.15       99.62
                93 |         10        0.10       99.72
                94 |         10        0.10       99.82
                95 |          8        0.08       99.90
                96 |          4        0.04       99.94
                97 |          2        0.02       99.96
                99 |          1        0.01       99.97
100 years and over |          3        0.03      100.00
-------------------+-----------------------------------
             Total |     10,000      100.00

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