i use the CrossTable (frome gregmic package) function to get such a table as 
below.
but the percentage of the non-NA levels(here 1,2,3,4,5) is not totally 100%.

is there any way to get a table that percentage of  the non-NA levelsis totally 
100%,as the SPSS' valid percentage.thank you!



   Cell Contents
|-------------------------|
|                   Count |
|             Row Percent |
|-------------------------|

Total Observations in Table:  650 

          |        1  |        2  |        3  |        4  |        5  | 
          |-----------|-----------|-----------|-----------|-----------|
          |      169  |      294  |      151  |       31  |        5  | 
          |    0.260% |    0.452% |    0.232% |    0.048% |    0.008% | 
          |-----------|-----------|-----------|-----------|-----------|

Number of Missing Observations: 4 (0.6116208%)

-- 
Department of Sociology
Fudan University,Shanghai
Blog:http://sociology.yculblog.com

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