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                  ..   0                  How often do you fall a  leep in clas  during a week's time?      ..    0     •



                     ..    0                     a.  three time  a  week                     45  01            ..  [).       •
                      [).
                                                 b.  two times a  week
                                                                                             20  0
                       -  o ~                    c.  none                                    35 5'              •   o ~
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