Frequencies for first 10,000 rows of popct variable in nhamcsed2006 dataset :

      pulse |
   oximetry |
  (percent) |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |          7        0.07        0.07
          1 |          2        0.02        0.09
          3 |          1        0.01        0.10
          9 |          1        0.01        0.11
         10 |          2        0.02        0.13
         48 |          1        0.01        0.14
         58 |          1        0.01        0.15
         62 |          1        0.01        0.16
         68 |          1        0.01        0.17
         70 |          1        0.01        0.18
         74 |          1        0.01        0.19
         77 |          1        0.01        0.20
         78 |          1        0.01        0.21
         79 |          1        0.01        0.22
         80 |          4        0.04        0.26
         81 |          2        0.02        0.28
         82 |          3        0.03        0.31
         83 |          3        0.03        0.34
         84 |          4        0.04        0.38
         85 |          8        0.08        0.46
         86 |          3        0.03        0.49
         87 |          6        0.06        0.55
         88 |          9        0.09        0.64
         89 |         11        0.11        0.75
         90 |         26        0.26        1.01
         91 |         18        0.18        1.19
         92 |         50        0.50        1.69
         93 |         66        0.66        2.35
         94 |        119        1.19        3.54
         95 |        227        2.27        5.81
         96 |        411        4.11        9.92
         97 |        683        6.83       16.75
         98 |      1,163       11.63       28.38
         99 |        852        8.52       36.90
        100 |        859        8.59       45.49
      blank |      5,451       54.51      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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