Table 4.

Structured-unstructured feature pairs AB with high interaction heterogeneity (IH), where A is a strong risk factor for suicide attempt.

Features		Cases				Non-cases
Structured (A)	Unstructured (B)	A	B	AB expected	AB actual	A	B	AB expected	AB actual	IH
Other, mixed, or unsp. Drug abuse, unsp. Use	Suicide attempts	2356	3741	374.53	1003	148	563	3.54	53	77.55
Other, mixed, or unsp. Drug abuse, unsp. Use	Section XII	2356	3045	304.85	849	148	403	2.53	43	74.72
Other, mixed, or unsp. Drug abuse, unsp. Use	Living on the street	2356	1113	111.43	532	148	154	0.97	36	66.66
Other, mixed, or unsp. Drug abuse, unsp. Use	Prison	2356	2043	204.53	825	148	358	2.25	51	62.57
Other, mixed, or unsp. Drug abuse, unsp. Use	Intoxications	2356	2663	266.61	889	148	462	2.91	50	60.56
Suicidal ideation	Section XII	1820	3045	235.49	1299	127	403	2.17	81	54.69
Other, mixed, or unsp. Drug abuse, unsp. Use	Undomiciled	2356	2357	235.97	964	148	408	2.57	55	54.50
Other, mixed, or unsp. Drug abuse, unsp. Use	Opioid dependence	2356	1625	162.69	841	148	195	1.23	44	53.86
Suicidal ideation	Schizoaffective schizophrenia	1820	676	52.28	223	127	118	0.64	21	52.75
Other, mixed, or unsp. Drug abuse, unsp. Use	Sober	2356	3667	367.12	1329	148	723	4.55	76	52.29
Other, mixed, or unsp. Drug abuse, unsp. Use	Unspecified bipolar disorder	2356	3488	349.20	932	148	699	4.40	49	48.53
Other, mixed, or unsp. Drug abuse, unsp. Use	Schizoaffective schizophrenia	2356	676	67.68	172	148	118	0.74	15	46.44
Opioid abuse, unspec. Use	Sober	1305	3667	203.35	710	78	723	2.40	42	46.09
Other, mixed, or unsp. Drug abuse, unsp. Use	Methadone	2356	2992	299.54	1165	148	653	4.11	69	45.55
Borderline personality	Methadone	582	2992	74.00	139	35	653	0.97	14	43.59
Opioid abuse, unspec. Use	Living on the street	1305	1113	61.72	293	78	154	0.51	18	43.28
Opioid type dependence, continuous use	Drug seeking	710	463	13.97	96	50	51	0.11	9	37.61
Suicidal ideation	Suicidality	1820	2546	196.90	1057	127	380	2.05	58	35.84
Other, mixed, or unsp. Drug abuse, unsp. Use	Cluster b	2356	495	49.56	175	148	43	0.27	10	35.70
Unspec. Neurotic disorder	Opioid dependence	1003	1625	69.26	191	72	195	0.60	12	35.48

A high IH value indicates that the relationship between A and B changes significantly between case and non-case populations.