TABLE 2.

Comparison of Annual Incidence and Prevalence of Youths' Suicide Attempt Rates Across Similar Studies

	Incidence or Prevalence of Having Made a Suicide Attempt in Past 12 Mo	Definition of Youths	Sample Type	Methods	Sample Size	Gender Ratios	Year(s) of Data Collection
White Mountain Apache Surveillance Registry, 2008	Annual incidence rate of 3495 per 100 000 (approximately 3.5%)	15–24 y	Mandatory tribal surveillance system among White Mountain Apache Tribe	Surveillance	∼15 500	Males and females equally likely to have made attempt reported to registry	2001–2006
Langlois and Morrison, 200213	Annual incidence rate of 152 per 100 000 hospitalizations for attempted suicide (approximately 0.2%)	15–19 y	1999 Canadian Hospital Morbidity Database	Nationally maintained inpatient database	NA	Females 2.5 times more likely to have been hospitalized for attempt than were males	1998–1999
Andrus et al., 199114	Annual incidence rate of 214 per 100 000 (approximately 0.2%)	10–17 y	Mandatory statewide hospital surveillance system in Oregon	Surveillance	70 hospitals	Majority (83%) of those who attempted were female	1988
Eaton et al., 200615	8.4% reported having attempted suicide; 2.3% reported having made attempt that required medical treatment	9th–12th graders	2005 nationally representative Youth Risk Behavior Survey among public and private high school students	Anonymous self-administered questionnaire	13 917	Females 1.8 times more likely to report attempt than were males	2004–2005
Lemaster et al., 200416	1.4% reported having attempted suicide	15–24 y	Population-based survey among Northern Plains American Indians	Face-to-face interviews	1 638	Similar rates reported between males and females	1997–1999
Shaughnessy et al., 200417	16.0% reported having attempted suicide	9th–12th graders	2001 Youth Risk Behavior Survey among Bureau of Indian Affairs–funded schools in 22 states	Anonymous self-administered questionnaire	5 624	Females 1.6 times more likely to report attempt than were males	2001
Benally et al., 200318	20.0% reported having attempted suicide	9th–12th graders	2003 Navajo Youth Risk Behavior Survey among high schools on or near Navajo Nation with at least 50% Navajo student enrollment	Anonymous self-administered questionnaire	8 374	Females 1.7 times more likely to report attempt than were males	2003
Borowsky et al., 200119	3.6% reported having attempted suicide	7th–12th graders	1995–1996 National Longitudinal Survey of Adolescent Health	In-school survey, in-home interviews	13 110	Females 2.5 times more likely to report attempt than were males	1994–1996
Borowsky et al., 199920	9.1% reported having attempted suicide	7th–12th graders	1990 National American Indian Adolescent Health Survey among schools of reservation communities	Anonymous self-administered questionnaire	11 666	Females 1.8 times more likely to report attempt than were males	1990
Garrison et al., 199321	5.9% reported having made attempt that did not require medical care; 1.6% reported having made attempt that required medical treatment	9th–12th graders	1990 South Carolina Youth Risk Behavior Survey among public high school students	Anonymous self-administered questionnaire	3 764	Females 2 times more likely to report attempt than were males	1990
Meehan et al., 199222	1.9% reported having attempted suicide; 0.4% reported having sought medical care as a result of suicide attempt	18–24 y	Freshman students at major public university in Nevada	Anonymous self-administered questionnaire	694	NA	Unclear (approximately 1990)
Grossman et al., 199123	9.5% reported having attempted suicide	6th–12th graders	1988 Indian Health Service Adolescent Health Survey among students on Navajo reservation	Anonymous self-administered questionnaire	7 254	Females 1.8 times more likely to report attempt than were males	1988

Note. NA = not available.