Q7. When you rode a motorcycle during the past 12 months,
                 how often did you wear a helmet?
                     (Weighted Column Percents)
 ----------------------------------------------------------------
                           Total               Grade
                                  -------------------------------
                                    9th    10th    11th    12th
 ----------------------------------------------------------------
 I did not ride a
    motorcycle during the
    past 12 months           73.3    72.0    72.8    73.7    75.6
 Never wore a helmet          5.5     5.6     5.3     5.6     5.8
 Rarely wore a helmet         2.1     2.2     2.1     2.2     1.7
 Sometimes wore a helmet      1.8     1.9     1.9     1.7     1.8
 Most of the time wore a
    helmet                    3.9     4.3     3.9     3.9     3.3
 Always wore a helmet        13.4    14.0    14.1    12.9    11.8
 Female
   I did not ride a
      motorcycle during
      the past 12 months     82.5    80.9    83.0    82.1    84.5
   Never wore a helmet        3.3     3.3     3.0     3.7     3.5
   Rarely wore a helmet       1.0     1.5      .8      .9      .6
   Sometimes wore a
      helmet                   .9     1.1      .8      .6      .8
   Most of the time wore
      a helmet                2.0     2.5     1.8     2.1     1.3
   Always wore a helmet      10.3    10.7    10.5    10.5     9.3
 Male
   I did not ride a
      motorcycle during
      the past 12 months     63.9    62.6    62.6    64.7    66.6
   Never wore a helmet        7.8     7.9     7.6     7.7     8.1
   Rarely wore a helmet       3.2     2.9     3.4     3.6     2.8
   Sometimes wore a
      helmet                  2.8     2.8     2.9     2.7     2.9
   Most of the time wore
      a helmet                5.8     6.2     5.9     5.8     5.3
   Always wore a helmet      16.5    17.6    17.6    15.5    14.3
 ----------------------------------------------------------------
                            Total N =
                              31,611

 
     Q7. When you rode a motorcycle during the past 12 months,
                 how often did you wear a helmet?
                     (Unweighted Frequencies)
 ----------------------------------------------------------------
                           Total               Grade
                                  -------------------------------
                                    9th    10th    11th    12th
 ----------------------------------------------------------------
 I did not ride a
    motorcycle during the
    past 12 months         22,857   6,700   6,272   5,265   4,620
 Never wore a helmet        1,887     590     503     434     360
 Rarely wore a helmet         712     213     208     173     118
 Sometimes wore a helmet      638     199     182     138     119
 Most of the time wore a
    helmet                  1,301     440     354     304     203
 Always wore a helmet       4,216   1,324   1,204     934     754
 Female
   I did not ride a
      motorcycle during
      the past 12 months   13,168   3,880   3,609   3,056   2,623
   Never wore a helmet        576     178     144     142     112
   Rarely wore a helmet       181      71      46      42      22
   Sometimes wore a
      helmet                  159      56      46      29      28
   Most of the time wore
      a helmet                342     132      82      84      44
   Always wore a helmet     1,650     505     450     390     305
 Male
   I did not ride a
      motorcycle during
      the past 12 months    9,689   2,820   2,663   2,209   1,997
   Never wore a helmet      1,311     412     359     292     248
   Rarely wore a helmet       531     142     162     131      96
   Sometimes wore a
      helmet                  479     143     136     109      91
   Most of the time wore
      a helmet                959     308     272     220     159
   Always wore a helmet     2,566     819     754     544     449
 ----------------------------------------------------------------
                            Total N =
                              31,611