Frequencies for first 10,000 rows of patcode variable in namcs2015 dataset :

 Sequential |
  numbering |
   of visit |
records per |
  physician |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        502        5.02        5.02
          2 |        487        4.87        9.89
          3 |        471        4.71       14.60
          4 |        452        4.52       19.12
          5 |        443        4.43       23.55
          6 |        420        4.20       27.75
          7 |        409        4.09       31.84
          8 |        402        4.02       35.86
          9 |        393        3.93       39.79
         10 |        378        3.78       43.57
         11 |        360        3.60       47.17
         12 |        347        3.47       50.64
         13 |        329        3.29       53.93
         14 |        319        3.19       57.12
         15 |        313        3.13       60.25
         16 |        300        3.00       63.25
         17 |        294        2.94       66.19
         18 |        282        2.82       69.01
         19 |        271        2.71       71.72
         20 |        259        2.59       74.31
         21 |        246        2.46       76.77
         22 |        234        2.34       79.11
         23 |        226        2.26       81.37
         24 |        213        2.13       83.50
         25 |        196        1.96       85.46
         26 |        177        1.77       87.23
         27 |        167        1.67       88.90
         28 |        154        1.54       90.44
         29 |        138        1.38       91.82
         30 |        126        1.26       93.08
         31 |        107        1.07       94.15
         32 |         93        0.93       95.08
         33 |         83        0.83       95.91
         34 |         74        0.74       96.65
         35 |         67        0.67       97.32
         36 |         56        0.56       97.88
         37 |         50        0.50       98.38
         38 |         45        0.45       98.83
         39 |         36        0.36       99.19
         40 |         30        0.30       99.49
         41 |         19        0.19       99.68
         42 |         13        0.13       99.81
         43 |          6        0.06       99.87
         44 |          3        0.03       99.90
         45 |          2        0.02       99.92
         46 |          1        0.01       99.93
         47 |          1        0.01       99.94
         48 |          1        0.01       99.95
         49 |          1        0.01       99.96
         50 |          1        0.01       99.97
         51 |          1        0.01       99.98
         52 |          1        0.01       99.99
         53 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 25 Oct 2017