Frequencies for first 10,000 rows of patcode variable in namcs2011 dataset :

    Patient |
       code |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        390        3.90        3.90
          2 |        389        3.89        7.79
          3 |        387        3.87       11.66
          4 |        387        3.87       15.53
          5 |        385        3.85       19.38
          6 |        379        3.79       23.17
          7 |        375        3.75       26.92
          8 |        371        3.71       30.63
          9 |        366        3.66       34.29
         10 |        364        3.64       37.93
         11 |        351        3.51       41.44
         12 |        347        3.47       44.91
         13 |        337        3.37       48.28
         14 |        330        3.30       51.58
         15 |        322        3.22       54.80
         16 |        313        3.13       57.93
         17 |        308        3.08       61.01
         18 |        301        3.01       64.02
         19 |        295        2.95       66.97
         20 |        287        2.87       69.84
         21 |        275        2.75       72.59
         22 |        259        2.59       75.18
         23 |        251        2.51       77.69
         24 |        236        2.36       80.05
         25 |        220        2.20       82.25
         26 |        208        2.08       84.33
         27 |        190        1.90       86.23
         28 |        177        1.77       88.00
         29 |        167        1.67       89.67
         30 |        150        1.50       91.17
         31 |        127        1.27       92.44
         32 |        112        1.12       93.56
         33 |        103        1.03       94.59
         34 |         95        0.95       95.54
         35 |         86        0.86       96.40
         36 |         77        0.77       97.17
         37 |         66        0.66       97.83
         38 |         55        0.55       98.38
         39 |         45        0.45       98.83
         40 |         38        0.38       99.21
         41 |         31        0.31       99.52
         42 |         17        0.17       99.69
         43 |          9        0.09       99.78
         44 |          5        0.05       99.83
         45 |          3        0.03       99.86
         46 |          3        0.03       99.89
         47 |          2        0.02       99.91
         48 |          1        0.01       99.92
         49 |          1        0.01       99.93
         50 |          1        0.01       99.94
         51 |          1        0.01       99.95
         52 |          1        0.01       99.96
         53 |          1        0.01       99.97
         54 |          1        0.01       99.98
         55 |          1        0.01       99.99
         56 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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