Frequencies for first 10,000 rows of examwi1r variable in nhamcsopd2004 dataset :

       exam |
write-in #1 |
   - recode |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      7,650       76.50       76.50
       7534 |         25        0.25       76.75
       8904 |          1        0.01       76.76
       8913 |        143        1.43       78.19
       8919 |          1        0.01       78.20
       8923 |          1        0.01       78.21
       8926 |        439        4.39       82.60
       8931 |          8        0.08       82.68
       8934 |         67        0.67       83.35
       8936 |        200        2.00       85.35
       8939 |      1,265       12.65       98.00
       8970 |          3        0.03       98.03
       9408 |          1        0.01       98.04
       9411 |          8        0.08       98.12
       9419 |         14        0.14       98.26
       9509 |        130        1.30       99.56
       9543 |          1        0.01       99.57
       9547 |          1        0.01       99.58
       9999 |         42        0.42      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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