Frequencies for first 10,000 rows of age variable in namcs2003 dataset :

    patient age in |
             years |      Freq.     Percent        Cum.
-------------------+-----------------------------------
    Under one year |        224        2.24        2.24
                 1 |        152        1.52        3.76
                 2 |        113        1.13        4.89
                 3 |         77        0.77        5.66
                 4 |        112        1.12        6.78
                 5 |         88        0.88        7.66
                 6 |         65        0.65        8.31
                 7 |         72        0.72        9.03
                 8 |         76        0.76        9.79
                 9 |         73        0.73       10.52
                10 |         81        0.81       11.33
                11 |         73        0.73       12.06
                12 |         72        0.72       12.78
                13 |        103        1.03       13.81
                14 |         86        0.86       14.67
                15 |         85        0.85       15.52
                16 |         90        0.90       16.42
                17 |         69        0.69       17.11
                18 |         86        0.86       17.97
                19 |         58        0.58       18.55
                20 |         61        0.61       19.16
                21 |         71        0.71       19.87
                22 |         70        0.70       20.57
                23 |         64        0.64       21.21
                24 |         66        0.66       21.87
                25 |         77        0.77       22.64
                26 |         81        0.81       23.45
                27 |         75        0.75       24.20
                28 |         75        0.75       24.95
                29 |         73        0.73       25.68
                30 |         83        0.83       26.51
                31 |        101        1.01       27.52
                32 |        121        1.21       28.73
                33 |         95        0.95       29.68
                34 |        103        1.03       30.71
                35 |         95        0.95       31.66
                36 |        113        1.13       32.79
                37 |        121        1.21       34.00
                38 |        132        1.32       35.32
                39 |        129        1.29       36.61
                40 |        120        1.20       37.81
                41 |        137        1.37       39.18
                42 |        122        1.22       40.40
                43 |        136        1.36       41.76
                44 |        162        1.62       43.38
                45 |        144        1.44       44.82
                46 |        153        1.53       46.35
                47 |        136        1.36       47.71
                48 |        146        1.46       49.17
                49 |        137        1.37       50.54
                50 |        161        1.61       52.15
                51 |        144        1.44       53.59
                52 |        193        1.93       55.52
                53 |        146        1.46       56.98
                54 |        139        1.39       58.37
                55 |        160        1.60       59.97
                56 |        171        1.71       61.68
                57 |        126        1.26       62.94
                58 |        135        1.35       64.29
                59 |        128        1.28       65.57
                60 |        145        1.45       67.02
                61 |        130        1.30       68.32
                62 |        143        1.43       69.75
                63 |        112        1.12       70.87
                64 |        131        1.31       72.18
                65 |        128        1.28       73.46
                66 |        136        1.36       74.82
                67 |        122        1.22       76.04
                68 |        127        1.27       77.31
                69 |        144        1.44       78.75
                70 |        127        1.27       80.02
                71 |        127        1.27       81.29
                72 |        138        1.38       82.67
                73 |        127        1.27       83.94
                74 |        128        1.28       85.22
                75 |        153        1.53       86.75
                76 |        118        1.18       87.93
                77 |        139        1.39       89.32
                78 |        142        1.42       90.74
                79 |        120        1.20       91.94
                80 |        130        1.30       93.24
                81 |         93        0.93       94.17
                82 |         89        0.89       95.06
                83 |         92        0.92       95.98
                84 |         65        0.65       96.63
                85 |         70        0.70       97.33
                86 |         61        0.61       97.94
                87 |         43        0.43       98.37
                88 |         36        0.36       98.73
                89 |         31        0.31       99.04
                90 |         27        0.27       99.31
                91 |         18        0.18       99.49
                92 |         17        0.17       99.66
                93 |         10        0.10       99.76
                94 |          6        0.06       99.82
                95 |          4        0.04       99.86
                96 |          5        0.05       99.91
                98 |          2        0.02       99.93
                99 |          3        0.03       99.96
100 years and over |          4        0.04      100.00
-------------------+-----------------------------------
             Total |     10,000      100.00

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