TABLE 2—

Suicide Risk Concentration, by Sample and Tier of Predicted Suicide Probability: Veterans Health Administration, United States, 2008–2011

	Prediction, Subsequent Mo			Development, Index Mo			Validation, Index Mo
Tier of Predicted Probability, %	Suicide Decedents, %	Ratio of Observed Suicides to Expected	Annualized Suicide Rate	Suicide Decedents, %	Ratio of Observed Suicides to Expected	Annualized Suicide Rate	Suicide Decedents, %	Ratio of Observed Suicides to Expected	Annualized Suicide Rate
0.01	1.4	142.2	5926.6	0.8	81.8	2954.5	0.6	59.7	2159.1
0.05	3.3	66.4	2762.0	2.5	50.9	1840.8	1.5	30.8	1113.6
0.10	4.3	42.7	1775.3	3.9	39.0	1409.0	3.0	29.9	1079.5
0.50	7.6	15.2	631.2	9.6	19.1	690.9	7.6	15.2	547.7
1.00	10.4	10.4	433.9	14.0	14.0	504.5	11.6	11.6	419.3
5.00	23.2	4.6	193.3	31.3	6.3	225.9	28.3	5.7	204.3
10.00	38.4	3.8	159.8	44.7	4.5	161.6	41.2	4.1	148.9
20.00	53.1	2.7	110.5	60.8	3.0	109.9	57.5	2.9	103.8
50.00	83.9	1.7	69.8	84.7	1.7	61.2	83.1	1.7	60.1
100.00	100.0	1.0	41.6	100.0	1.0	36.1	100.0	1.0	36.1

Note. Deaths from suicide were assessed in the month following calculation of predicted risk for the prediction sample and in the month of assessment for the development and validation samples.