Frequencies for first 10,000 rows of hospcode variable in nhamcsopd2000 dataset :

   hospital |
       code |      Freq.     Percent        Cum.
------------+-----------------------------------
          5 |        108        1.08        1.08
          6 |         36        0.36        1.44
          7 |        109        1.09        2.53
          8 |         81        0.81        3.34
          9 |        136        1.36        4.70
         10 |        133        1.33        6.03
         12 |        133        1.33        7.36
         16 |        118        1.18        8.54
         17 |        139        1.39        9.93
         18 |        117        1.17       11.10
         21 |         81        0.81       11.91
         22 |         96        0.96       12.87
         23 |         69        0.69       13.56
         24 |         81        0.81       14.37
         28 |        160        1.60       15.97
         31 |        116        1.16       17.13
         32 |         78        0.78       17.91
         33 |        124        1.24       19.15
         34 |        157        1.57       20.72
         36 |         79        0.79       21.51
         39 |         80        0.80       22.31
         40 |         98        0.98       23.29
         42 |        146        1.46       24.75
         44 |        183        1.83       26.58
         48 |        137        1.37       27.95
         49 |        151        1.51       29.46
         50 |        153        1.53       30.99
         51 |        141        1.41       32.40
         52 |         62        0.62       33.02
         53 |        164        1.64       34.66
         54 |        154        1.54       36.20
         58 |        133        1.33       37.53
         63 |        151        1.51       39.04
         64 |         50        0.50       39.54
         65 |        129        1.29       40.83
         66 |        195        1.95       42.78
         67 |         57        0.57       43.35
         69 |         29        0.29       43.64
         70 |        120        1.20       44.84
         71 |        186        1.86       46.70
         74 |         29        0.29       46.99
         76 |        186        1.86       48.85
         79 |        103        1.03       49.88
         80 |        112        1.12       51.00
         81 |        128        1.28       52.28
         82 |        133        1.33       53.61
         83 |         93        0.93       54.54
         84 |        177        1.77       56.31
         85 |        133        1.33       57.64
         87 |        105        1.05       58.69
         88 |        154        1.54       60.23
         89 |        123        1.23       61.46
         95 |          4        0.04       61.50
         99 |         85        0.85       62.35
        100 |        169        1.69       64.04
        101 |        148        1.48       65.52
        103 |        153        1.53       67.05
        108 |        144        1.44       68.49
        111 |        131        1.31       69.80
        112 |        264        2.64       72.44
        115 |         99        0.99       73.43
        117 |        146        1.46       74.89
        120 |        112        1.12       76.01
        121 |        105        1.05       77.06
        127 |        147        1.47       78.53
        128 |        105        1.05       79.58
        129 |        201        2.01       81.59
        130 |        126        1.26       82.85
        132 |        159        1.59       84.44
        133 |         61        0.61       85.05
        134 |        117        1.17       86.22
        135 |        171        1.71       87.93
        136 |        178        1.78       89.71
        137 |        157        1.57       91.28
        140 |        159        1.59       92.87
        143 |        136        1.36       94.23
        144 |        126        1.26       95.49
        146 |         78        0.78       96.27
        147 |        120        1.20       97.47
        150 |        102        1.02       98.49
        153 |        151        1.51      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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