TABLE 3.

Normalized Correlation Coefficients of Covariates (β Coefficients) for Suicide Rates in U.S. Counties

Measure	Overall Suicide Rate, 1998–2000 and 2003–2005^a (2,631 Observations)	3-Year Suicide Rate, 2003–2005^a (2,781 Observations)	3-Year Suicide Rate, 1998–2000^a (2,770 Observations)
Adjusted R²	0.449^*	0.305^*	0.527^*
Altitude	0.239^*	0.135^*	0.184^*
Total number of child psychiatrists, 2005	−0.087	−0.069	−0.047
Total number of psychiatrists, 2005	0.034	0.027	0.024
Number of psychiatry, patient care, and hospital full-time staff, 2005	0.073^*	0.043	0.046
Percentage of persons in poverty^a	0.142^*	0.075^*	0.100^*
Unemployment rate for persons age 16 and older^a	−0.027	0.010	−0.057^*
Per capita income^a	0.117^*	0.058	0.057^*
Percentage of persons age 25 or older with less than 9 years of school, 2000	−0.228^*	−0.167^*	−0.107^*
Percentage of persons age 25 or older with at least a high school diploma, 2000	−0.135^*	−0.136^*	−0.066
Percentage of persons age 25 or older with 4 years or more of college, 2000	−0.139^*	−0.032	−0.128^*
Population density^a	−0.021	−0.011	−0.018
Male population ratio^a	−0.030	0.011	−0.041
Female population ratio^a	−0.047	0.039	−0.009
White male population ratio^a	−0.202	0.050	−0.005
White female population ratio^a	0.306^*	0.043	0.082
Divorced female population ratio, 2000	0.534^*	0.492^*	0.637^*

The 1998 and 1999 populations were estimated on the basis of 1990 U.S. census data. The 2003, 2004, and 2005 populations were estimated on the basis of 2000 U.S. census data.

p≤0.05.