Q53. How old were you when you tried marijuana
                        for the first time?
                     Weighted Column Percents
 ----------------------------------------------------------------
                           Total               Grade
                                  -------------------------------
                                    9th    10th    11th    12th
 ----------------------------------------------------------------
 I have never tried
    marijuana                56.2    62.9    54.3    52.9    52.7
 8 years old or younger       1.6     1.7     1.9     1.3     1.1
 9 or 10 years old            1.8     2.4     2.1     1.5     1.0
 11 or 12 years old           7.1     9.9     8.0     5.3     3.5
 13 or 14 years old          19.4    20.7    22.2    18.5    14.5
 15 or 16 years old          12.2     2.4    11.2    19.1    20.6
 17 years old or older        1.7      .0      .3     1.4     6.6
 Female
   I have never tried
      marijuana              57.9    64.0    56.5    53.8    55.5
   8 years old or younger     1.0     1.2     1.5      .9      .5
   9 or 10 years old          1.3     1.9     1.4     1.0      .6
   11 or 12 years old         6.2     9.0     7.0     4.7     2.6
   13 or 14 years old        19.8    21.8    22.7    18.3    14.4
   15 or 16 years old        12.2     2.1    10.8    20.1    20.2
   17 years old or older      1.6      .0      .2     1.2     6.3
 Male
   I have never tried
      marijuana              54.4    61.7    52.2    51.9    49.8
   8 years old or younger     2.1     2.2     2.4     1.9     1.7
   9 or 10 years old          2.4     2.9     2.8     2.1     1.5
   11 or 12 years old         8.0    10.9     9.1     5.9     4.5
   13 or 14 years old        19.0    19.5    21.7    18.7    14.6
   15 or 16 years old        12.2     2.7    11.6    18.0    20.9
   17 years old or older      1.8      .0      .3     1.6     7.0
 ----------------------------------------------------------------
                            Total N =
                              31,854

 
          Q53. How old were you when you tried marijuana
                        for the first time?
                      Unweighted Frequencies
 ----------------------------------------------------------------
                           Total               Grade
                                  -------------------------------
                                    9th    10th    11th    12th
 ----------------------------------------------------------------
 I have never tried
    marijuana              17,668   5,879   4,744   3,830   3,215
 8 years old or younger       538     175     179     101      83
 9 or 10 years old            621     248     193     114      66
 11 or 12 years old         2,322     976     716     396     234
 13 or 14 years old         6,174   1,990   1,932   1,330     922
 15 or 16 years old         3,961     255     992   1,433   1,281
 17 years old or older        570       0      21     113     436
 Female
   I have never tried
      marijuana             9,243   3,043   2,471   2,011   1,718
   8 years old or younger     185      62      65      35      23
   9 or 10 years old          226     103      62      42      19
   11 or 12 years old       1,027     453     310     177      87
   13 or 14 years old       3,228   1,069   1,010     684     465
   15 or 16 years old       2,058     123     485     783     667
   17 years old or older      262       0       9      50     203
 Male
   I have never tried
      marijuana             8,425   2,836   2,273   1,819   1,497
   8 years old or younger     353     113     114      66      60
   9 or 10 years old          395     145     131      72      47
   11 or 12 years old       1,295     523     406     219     147
   13 or 14 years old       2,946     921     922     646     457
   15 or 16 years old       1,903     132     507     650     614
   17 years old or older      308       0      12      63     233
 ----------------------------------------------------------------
                            Total N =
                              31,854