Frequencies for first 10,000 rows of age variable in namcs2012 dataset :

   Patient age in |
            years |      Freq.     Percent        Cum.
------------------+-----------------------------------
     Under 1 year |        296        2.96        2.96
                1 |        193        1.93        4.89
                2 |        124        1.24        6.13
                3 |        116        1.16        7.29
                4 |         96        0.96        8.25
                5 |         88        0.88        9.13
                6 |         85        0.85        9.98
                7 |         85        0.85       10.83
                8 |         77        0.77       11.60
                9 |         67        0.67       12.27
               10 |         75        0.75       13.02
               11 |         68        0.68       13.70
               12 |         81        0.81       14.51
               13 |         74        0.74       15.25
               14 |         81        0.81       16.06
               15 |         88        0.88       16.94
               16 |         91        0.91       17.85
               17 |         88        0.88       18.73
               18 |         81        0.81       19.54
               19 |         70        0.70       20.24
               20 |         70        0.70       20.94
               21 |         59        0.59       21.53
               22 |         61        0.61       22.14
               23 |         70        0.70       22.84
               24 |         80        0.80       23.64
               25 |         68        0.68       24.32
               26 |         78        0.78       25.10
               27 |         83        0.83       25.93
               28 |        102        1.02       26.95
               29 |        107        1.07       28.02
               30 |         89        0.89       28.91
               31 |        105        1.05       29.96
               32 |        107        1.07       31.03
               33 |        107        1.07       32.10
               34 |        102        1.02       33.12
               35 |         98        0.98       34.10
               36 |         98        0.98       35.08
               37 |        106        1.06       36.14
               38 |         95        0.95       37.09
               39 |        105        1.05       38.14
               40 |        105        1.05       39.19
               41 |        133        1.33       40.52
               42 |        137        1.37       41.89
               43 |        105        1.05       42.94
               44 |        119        1.19       44.13
               45 |        127        1.27       45.40
               46 |        109        1.09       46.49
               47 |        111        1.11       47.60
               48 |        137        1.37       48.97
               49 |        132        1.32       50.29
               50 |        157        1.57       51.86
               51 |        162        1.62       53.48
               52 |        134        1.34       54.82
               53 |        152        1.52       56.34
               54 |        175        1.75       58.09
               55 |        137        1.37       59.46
               56 |        157        1.57       61.03
               57 |        160        1.60       62.63
               58 |        138        1.38       64.01
               59 |        165        1.65       65.66
               60 |        150        1.50       67.16
               61 |        155        1.55       68.71
               62 |        149        1.49       70.20
               63 |        138        1.38       71.58
               64 |        174        1.74       73.32
               65 |        160        1.60       74.92
               66 |        144        1.44       76.36
               67 |        141        1.41       77.77
               68 |        149        1.49       79.26
               69 |        128        1.28       80.54
               70 |        140        1.40       81.94
               71 |        145        1.45       83.39
               72 |        132        1.32       84.71
               73 |        123        1.23       85.94
               74 |        119        1.19       87.13
               75 |        131        1.31       88.44
               76 |        107        1.07       89.51
               77 |        106        1.06       90.57
               78 |        101        1.01       91.58
               79 |         85        0.85       92.43
               80 |         90        0.90       93.33
               81 |         83        0.83       94.16
               82 |         79        0.79       94.95
               83 |         72        0.72       95.67
               84 |         73        0.73       96.40
               85 |         77        0.77       97.17
               86 |         55        0.55       97.72
               87 |         54        0.54       98.26
               88 |         35        0.35       98.61
               89 |         30        0.30       98.91
               90 |         24        0.24       99.15
               91 |         19        0.19       99.34
92 years or older |         66        0.66      100.00
------------------+-----------------------------------
            Total |     10,000      100.00

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