Table 3.

Variance components (95% confidence intervals) from bivariate twin-family modeling results where events of undetermined intent were excluded from the analysis.

Suicide Attempt	Women Estimate	95% CI	Men Estimate	95% CI
A	0.55	0.55; 0.56	0.35	0.30; 0.35
C	0.00	0.00; 0.00	0.06	0.06; 0.06
E	0.44	0.42; 0.47	0.59	0.59; 0.62
Suicide Death
A	0.46	0.32; 0.61	0.44	0.44; 0.52
C	-	-	-	-
E	0.54	0.40; 0.68	0.56	0.48; 0.61

A=additive genetic variance component (heritability); C=common/shared environment variance component; E=unshared environment variance component; HR=hazard ratio; CI=confidence intervals