Frequencies for first 10,000 rows of age variable in nhamcsed2001 dataset :

    patient age in |
             years |      Freq.     Percent        Cum.
-------------------+-----------------------------------
    Under one year |        330        3.30        3.30
                 1 |        276        2.76        6.06
                 2 |        198        1.98        8.04
                 3 |        167        1.67        9.71
                 4 |        131        1.31       11.02
                 5 |        125        1.25       12.27
                 6 |        103        1.03       13.30
                 7 |         98        0.98       14.28
                 8 |         78        0.78       15.06
                 9 |         92        0.92       15.98
                10 |        108        1.08       17.06
                11 |        110        1.10       18.16
                12 |         95        0.95       19.11
                13 |         92        0.92       20.03
                14 |         88        0.88       20.91
                15 |        119        1.19       22.10
                16 |        117        1.17       23.27
                17 |        121        1.21       24.48
                18 |        163        1.63       26.11
                19 |        146        1.46       27.57
                20 |        170        1.70       29.27
                21 |        173        1.73       31.00
                22 |        166        1.66       32.66
                23 |        165        1.65       34.31
                24 |        158        1.58       35.89
                25 |        155        1.55       37.44
                26 |        165        1.65       39.09
                27 |        140        1.40       40.49
                28 |        146        1.46       41.95
                29 |        173        1.73       43.68
                30 |        159        1.59       45.27
                31 |        149        1.49       46.76
                32 |        165        1.65       48.41
                33 |        170        1.70       50.11
                34 |        138        1.38       51.49
                35 |        166        1.66       53.15
                36 |        161        1.61       54.76
                37 |        150        1.50       56.26
                38 |        166        1.66       57.92
                39 |        165        1.65       59.57
                40 |        163        1.63       61.20
                41 |        172        1.72       62.92
                42 |        153        1.53       64.45
                43 |        153        1.53       65.98
                44 |        136        1.36       67.34
                45 |        116        1.16       68.50
                46 |        135        1.35       69.85
                47 |        118        1.18       71.03
                48 |        125        1.25       72.28
                49 |        126        1.26       73.54
                50 |         93        0.93       74.47
                51 |        101        1.01       75.48
                52 |         90        0.90       76.38
                53 |        106        1.06       77.44
                54 |         86        0.86       78.30
                55 |         86        0.86       79.16
                56 |         78        0.78       79.94
                57 |         69        0.69       80.63
                58 |         78        0.78       81.41
                59 |         70        0.70       82.11
                60 |         64        0.64       82.75
                61 |         79        0.79       83.54
                62 |         75        0.75       84.29
                63 |         52        0.52       84.81
                64 |         63        0.63       85.44
                65 |         49        0.49       85.93
                66 |         59        0.59       86.52
                67 |         60        0.60       87.12
                68 |         70        0.70       87.82
                69 |         60        0.60       88.42
                70 |         66        0.66       89.08
                71 |         65        0.65       89.73
                72 |         66        0.66       90.39
                73 |         67        0.67       91.06
                74 |         59        0.59       91.65
                75 |         56        0.56       92.21
                76 |         65        0.65       92.86
                77 |         68        0.68       93.54
                78 |         58        0.58       94.12
                79 |         48        0.48       94.60
                80 |         59        0.59       95.19
                81 |         54        0.54       95.73
                82 |         50        0.50       96.23
                83 |         49        0.49       96.72
                84 |         27        0.27       96.99
                85 |         49        0.49       97.48
                86 |         38        0.38       97.86
                87 |         29        0.29       98.15
                88 |         39        0.39       98.54
                89 |         33        0.33       98.87
                90 |         23        0.23       99.10
                91 |         12        0.12       99.22
                92 |         12        0.12       99.34
                93 |         25        0.25       99.59
                94 |         12        0.12       99.71
                95 |          5        0.05       99.76
                96 |          5        0.05       99.81
                97 |          5        0.05       99.86
                98 |          5        0.05       99.91
                99 |          4        0.04       99.95
100 years and over |          5        0.05      100.00
-------------------+-----------------------------------
             Total |     10,000      100.00

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