Frequencies for first 10,000 rows of age variable in namcs2013 dataset :

   Patient age in |
            years |      Freq.     Percent        Cum.
------------------+-----------------------------------
     Under 1 year |        313        3.13        3.13
                1 |        173        1.73        4.86
                2 |        112        1.12        5.98
                3 |        125        1.25        7.23
                4 |        107        1.07        8.30
                5 |         94        0.94        9.24
                6 |         70        0.70        9.94
                7 |         87        0.87       10.81
                8 |         71        0.71       11.52
                9 |         78        0.78       12.30
               10 |         61        0.61       12.91
               11 |         67        0.67       13.58
               12 |         70        0.70       14.28
               13 |         88        0.88       15.16
               14 |         92        0.92       16.08
               15 |         78        0.78       16.86
               16 |         77        0.77       17.63
               17 |         74        0.74       18.37
               18 |         74        0.74       19.11
               19 |         69        0.69       19.80
               20 |         57        0.57       20.37
               21 |         57        0.57       20.94
               22 |         53        0.53       21.47
               23 |         72        0.72       22.19
               24 |         84        0.84       23.03
               25 |         77        0.77       23.80
               26 |         83        0.83       24.63
               27 |         84        0.84       25.47
               28 |         87        0.87       26.34
               29 |         88        0.88       27.22
               30 |         96        0.96       28.18
               31 |         93        0.93       29.11
               32 |        101        1.01       30.12
               33 |         91        0.91       31.03
               34 |        109        1.09       32.12
               35 |         93        0.93       33.05
               36 |         99        0.99       34.04
               37 |         89        0.89       34.93
               38 |        101        1.01       35.94
               39 |         91        0.91       36.85
               40 |         74        0.74       37.59
               41 |        107        1.07       38.66
               42 |        112        1.12       39.78
               43 |        129        1.29       41.07
               44 |        111        1.11       42.18
               45 |        132        1.32       43.50
               46 |         98        0.98       44.48
               47 |         95        0.95       45.43
               48 |        133        1.33       46.76
               49 |        123        1.23       47.99
               50 |        131        1.31       49.30
               51 |        149        1.49       50.79
               52 |        145        1.45       52.24
               53 |        154        1.54       53.78
               54 |        144        1.44       55.22
               55 |        163        1.63       56.85
               56 |        159        1.59       58.44
               57 |        164        1.64       60.08
               58 |        141        1.41       61.49
               59 |        165        1.65       63.14
               60 |        156        1.56       64.70
               61 |        142        1.42       66.12
               62 |        145        1.45       67.57
               63 |        154        1.54       69.11
               64 |        150        1.50       70.61
               65 |        177        1.77       72.38
               66 |        187        1.87       74.25
               67 |        145        1.45       75.70
               68 |        154        1.54       77.24
               69 |        155        1.55       78.79
               70 |        156        1.56       80.35
               71 |        149        1.49       81.84
               72 |        121        1.21       83.05
               73 |        155        1.55       84.60
               74 |        139        1.39       85.99
               75 |        123        1.23       87.22
               76 |        109        1.09       88.31
               77 |        113        1.13       89.44
               78 |        135        1.35       90.79
               79 |         98        0.98       91.77
               80 |         95        0.95       92.72
               81 |         90        0.90       93.62
               82 |         81        0.81       94.43
               83 |         90        0.90       95.33
               84 |         76        0.76       96.09
               85 |         71        0.71       96.80
               86 |         49        0.49       97.29
               87 |         56        0.56       97.85
               88 |         43        0.43       98.28
               89 |         41        0.41       98.69
               90 |         38        0.38       99.07
               91 |         20        0.20       99.27
92 years or older |         73        0.73      100.00
------------------+-----------------------------------
            Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 27 Mar 2017