Frequencies for first 10,000 rows of proc12 variable in nhamcsed1998 dataset :

      other |
  procedure |
 #1 - 2 dgt |      Freq.     Percent        Cum.
------------+-----------------------------------
         00 |      9,411       94.11       94.11
         01 |          1        0.01       94.12
         04 |          3        0.03       94.15
         27 |          1        0.01       94.16
         34 |          3        0.03       94.19
         37 |          3        0.03       94.22
         38 |         19        0.19       94.41
         39 |          8        0.08       94.49
         42 |          1        0.01       94.50
         44 |          1        0.01       94.51
         45 |          3        0.03       94.54
         47 |          1        0.01       94.55
         49 |          2        0.02       94.57
         55 |          1        0.01       94.58
         64 |          1        0.01       94.59
         71 |          1        0.01       94.60
         80 |          1        0.01       94.61
         85 |          1        0.01       94.62
         86 |         19        0.19       94.81
         88 |          1        0.01       94.82
         89 |         98        0.98       95.80
         90 |         10        0.10       95.90
         91 |          4        0.04       95.94
         93 |         35        0.35       96.29
         94 |        285        2.85       99.14
         96 |         30        0.30       99.44
         97 |          5        0.05       99.49
         98 |          3        0.03       99.52
         99 |         48        0.48      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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