In this thesis, Quan describes differences with respect to age & sex among various different methods of suicide & stressors. The study encompassed 920 suicides & 1050 motor vehicle accident deaths in Albertans aged 55 or up. More male than females commit suicide by gunshot, more suicides occur in rural areas, and physical illness & financial diffculty were common stressors in male suicides. Elderly people who committed suicide often had cancer or other physical diseases. (316 refs.)