Frequencies for first 10,000 rows of age variable in nhamcsopd2010 dataset :

    patient age in |
             years |      Freq.     Percent        Cum.
-------------------+-----------------------------------
    under one year |        285        2.85        2.85
                 1 |        163        1.63        4.48
                 2 |        132        1.32        5.80
                 3 |        102        1.02        6.82
                 4 |         74        0.74        7.56
                 5 |         84        0.84        8.40
                 6 |         78        0.78        9.18
                 7 |         74        0.74        9.92
                 8 |         66        0.66       10.58
                 9 |         75        0.75       11.33
                10 |         64        0.64       11.97
                11 |         73        0.73       12.70
                12 |         51        0.51       13.21
                13 |         69        0.69       13.90
                14 |         53        0.53       14.43
                15 |         71        0.71       15.14
                16 |         91        0.91       16.05
                17 |         92        0.92       16.97
                18 |         97        0.97       17.94
                19 |         98        0.98       18.92
                20 |        101        1.01       19.93
                21 |        108        1.08       21.01
                22 |        114        1.14       22.15
                23 |        100        1.00       23.15
                24 |        126        1.26       24.41
                25 |        122        1.22       25.63
                26 |        120        1.20       26.83
                27 |        107        1.07       27.90
                28 |        130        1.30       29.20
                29 |        124        1.24       30.44
                30 |        142        1.42       31.86
                31 |        115        1.15       33.01
                32 |        111        1.11       34.12
                33 |        120        1.20       35.32
                34 |        111        1.11       36.43
                35 |        115        1.15       37.58
                36 |        112        1.12       38.70
                37 |        115        1.15       39.85
                38 |        121        1.21       41.06
                39 |        125        1.25       42.31
                40 |        120        1.20       43.51
                41 |         97        0.97       44.48
                42 |        119        1.19       45.67
                43 |        139        1.39       47.06
                44 |        124        1.24       48.30
                45 |        122        1.22       49.52
                46 |        141        1.41       50.93
                47 |        171        1.71       52.64
                48 |        166        1.66       54.30
                49 |        166        1.66       55.96
                50 |        157        1.57       57.53
                51 |        188        1.88       59.41
                52 |        145        1.45       60.86
                53 |        190        1.90       62.76
                54 |        154        1.54       64.30
                55 |        164        1.64       65.94
                56 |        161        1.61       67.55
                57 |        152        1.52       69.07
                58 |        163        1.63       70.70
                59 |        133        1.33       72.03
                60 |        135        1.35       73.38
                61 |        160        1.60       74.98
                62 |        148        1.48       76.46
                63 |        163        1.63       78.09
                64 |        119        1.19       79.28
                65 |        132        1.32       80.60
                66 |        144        1.44       82.04
                67 |        113        1.13       83.17
                68 |        130        1.30       84.47
                69 |        118        1.18       85.65
                70 |        111        1.11       86.76
                71 |         89        0.89       87.65
                72 |         93        0.93       88.58
                73 |         86        0.86       89.44
                74 |         97        0.97       90.41
                75 |         82        0.82       91.23
                76 |         70        0.70       91.93
                77 |         64        0.64       92.57
                78 |         77        0.77       93.34
                79 |         68        0.68       94.02
                80 |         48        0.48       94.50
                81 |         61        0.61       95.11
                82 |         68        0.68       95.79
                83 |         75        0.75       96.54
                84 |         64        0.64       97.18
                85 |         42        0.42       97.60
                86 |         30        0.30       97.90
                87 |         43        0.43       98.33
                88 |         47        0.47       98.80
                89 |         29        0.29       99.09
                90 |         18        0.18       99.27
                91 |         21        0.21       99.48
                92 |         14        0.14       99.62
                93 |         10        0.10       99.72
                94 |          8        0.08       99.80
                95 |          9        0.09       99.89
                96 |          4        0.04       99.93
                97 |          2        0.02       99.95
                98 |          2        0.02       99.97
                99 |          2        0.02       99.99
100 years and over |          1        0.01      100.00
-------------------+-----------------------------------
             Total |     10,000      100.00

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