Factors affecting length of stay in forensic hospital setting: need for therapeutic security and course of admission

Table 4 DUNDRUM-1 triage security scale items and length of stay (days) to discharge or end of study

Score	0			1			2			3			4			Log rank Mantel-Cox N = 279		Log rank Mantel Cox N = 187
Item	n	Median	SE	n	Median	SE	n	Median	SE	n	Median	SE	n	Median	SE	X ²	P	X2	p
TS1: seriousness of violence	7	12	3.9	36	18	6.5	47	49	5.5	92	54	6.9	97	78	15.7	39.9	0.001	17.9	0.001
TS2: seriousness of suicidal act	93	64	8.8	87	48	7.5	32	66	15.6	39	50	5.2	28	45	16.5	2.4	0.668	3.9	0.425
TS3: still in mental state that led to serious violence	11	12	1.1	19	26	13.8	84	49	5.9	49	76	9.5	116	67	9.9	20.7	0.001	9.5	0.049
TS4: still in mental state that led to serious suicidal act	97	67	13.5	44	41	16.6	86	55	4.6	16	64	26.0	36	49	2.2	2.02	0.733	4.1	0.389
TS5: specialist forensic need	15	34	23.8	73	34	6.4	73	49	6.6	78	102	25.4	40	67	15.0	27.3	0.001	17.6	0.001
TS6: absconding/eloping	5	49	41.6	25	14	5.9	123	42	5.5	103	79	19.4	23	61	25.6	25.1	0.001	13.3	0.01
TS7: preventing access	2	11	–	32	62	16.3	128	48	6.4	92	60	6.2	25	55	15.8	2.5	0.641	4.0	0.401
TS8: victim sensitivity & public confidence	16	66	36.0	60	26	6.6	84	50	5.9	68	60	15.5	51	79	27.2	28.4	0.001	9.6	0.047
TS9: complex risk of violence	5	6	2.2	33	37	8.0	61	49	6.1	128	59	6.9	52	67	4.8	38.4	0.001	30.9	0.001
TS10: institutional behavior	29	57	15.2	94	54	7.8	95	43	8.9	37	98	26.8	24	64	6.9	11.9	0.018	13.7	0.008
TS11: legal process	0	–	–	2	3	–	0	–	–	64	49	12.5	213	57	8.4	9.0	0.015	0.2	0.7

Calculated from Kaplan-Meyer survival analysis. Medians, standard errors and Log rank Mantel-Cox X ², df = 4, n = 279 all patients; n = 187 those for whom a HCR-20 was available

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