In 1990, firearms were the most common suicide method among females in all three age groups examined, accounting for 55.2% of suicides in the group aged 10-14 years, 56.0% in the group aged 15-19
years, and 53.4% in the group aged 20-24 years. However, from 1990
to 2004, among females in each of the three age groups, significant downward trends were observed in the rates both for firearm suicides (p<0.01) and poisoning suicides (p<0.05), and a significant increase was observed in the rate for suicides by hanging/suffocation (p<0.01). In 2004, hanging/suffocation was the most common method among females in all three age groups, accounting for 71.4% of suicides in the group aged 10-14 years, 49% in the group aged 15-19 years,
and 34.2% in the group aged 20-24 years. In addition, from 2003 to 2004, hanging/suffocation suicide rates among females aged 10-14 and 15-19 years increased by 119.4% (from 0.31 to 0.68 per 100,000 persons)
and 43.5% (from 1.24 to 1.78), respectively. In absolute numbers,
from 2003 to 2004, suicides by hanging/suffocation increased from 32 to 70 among females aged 10-14 years and from 124 to 174 among females aged 15-19 years. Aside from 2004, the only other significant departure from trend among females in these two age groups during 1990-2004 was in suicides by hanging/suffocation among females aged 15-19 years in 1996.