Frequencies for first 10,000 rows of su variable in nhamcsopd2002 dataset :

   hospital |
   sampling |
 unit (=001 |
 for namcs) |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        905        9.05        9.05
          2 |        957        9.57       18.62
          3 |        746        7.46       26.08
          4 |        346        3.46       29.54
          5 |        420        4.20       33.74
          6 |        338        3.38       37.12
          7 |        221        2.21       39.33
          8 |        292        2.92       42.25
          9 |        267        2.67       44.92
         10 |        344        3.44       48.36
         11 |        131        1.31       49.67
         12 |        104        1.04       50.71
         13 |        148        1.48       52.19
         14 |        193        1.93       54.12
         15 |        166        1.66       55.78
         16 |        183        1.83       57.61
         17 |         95        0.95       58.56
         18 |        102        1.02       59.58
         19 |         98        0.98       60.56
         20 |         84        0.84       61.40
         21 |         66        0.66       62.06
         22 |         92        0.92       62.98
         23 |         50        0.50       63.48
         24 |        186        1.86       65.34
         25 |        206        2.06       67.40
         26 |        193        1.93       69.33
         27 |         76        0.76       70.09
         28 |         35        0.35       70.44
         29 |         90        0.90       71.34
         30 |        153        1.53       72.87
         31 |         75        0.75       73.62
         32 |         32        0.32       73.94
         33 |        176        1.76       75.70
         34 |         71        0.71       76.41
         36 |        100        1.00       77.41
         37 |        143        1.43       78.84
         38 |         22        0.22       79.06
         39 |         57        0.57       79.63
         40 |         27        0.27       79.90
         41 |         19        0.19       80.09
         42 |         58        0.58       80.67
         43 |        113        1.13       81.80
         44 |         94        0.94       82.74
         45 |         35        0.35       83.09
         46 |         58        0.58       83.67
         47 |         88        0.88       84.55
         48 |         49        0.49       85.04
         49 |         43        0.43       85.47
         50 |         38        0.38       85.85
         51 |         17        0.17       86.02
         52 |        135        1.35       87.37
         53 |         33        0.33       87.70
         54 |         86        0.86       88.56
         55 |         96        0.96       89.52
         56 |         52        0.52       90.04
         57 |         27        0.27       90.31
         58 |         32        0.32       90.63
         59 |         18        0.18       90.81
         60 |         29        0.29       91.10
         61 |         31        0.31       91.41
         62 |         25        0.25       91.66
         63 |         23        0.23       91.89
         64 |         29        0.29       92.18
         65 |         85        0.85       93.03
         66 |         21        0.21       93.24
         68 |         26        0.26       93.50
         71 |         25        0.25       93.75
         72 |         24        0.24       93.99
         73 |         36        0.36       94.35
         74 |         21        0.21       94.56
         75 |         30        0.30       94.86
         79 |         15        0.15       95.01
         88 |         27        0.27       95.28
         91 |         23        0.23       95.51
         92 |         35        0.35       95.86
         96 |         58        0.58       96.44
        100 |         20        0.20       96.64
        106 |         45        0.45       97.09
        108 |         10        0.10       97.19
        109 |         60        0.60       97.79
        111 |         26        0.26       98.05
        115 |         29        0.29       98.34
        123 |         56        0.56       98.90
        124 |         50        0.50       99.40
        129 |         26        0.26       99.66
        133 |         25        0.25       99.91
        135 |          9        0.09      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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