A tool to evaluate proportionality and necessity in the use of restrictive practices in forensic mental health settings: the DRILL tool (Dundrum restriction, intrusion and liberty ladders)

Table 8 General Estimating Equations Model 2: DASA previous day as independent, DRILL-Interventions total (DRILL-Int.) as dependent. DUNDRUM-1 (D-1) and HCR-20-Current scale (HCR-20-C) as co-variants

model	independent	Co-variant	dependent	n	N	QICC	Parameter	Wald X²	df	p
2.0	DASA previous day	–	DRILL-Int	2166	28	17,991.0	DASA previous day	1034.0	8	0.000
2.1	DASA previous day		DRILL-Int	2166	28	17,771.9	DASA previous day	829.9	8	0.000
2.1		D-1					D-1	2.5	1	0.113
2.2	DASA previous day		DRILL-Int	2103	26	17,116.4	DASA previous day	919.8	8	0.000
2.2		HCR-C					HCR-C	2.4	1	0.121
2.3	DASA previous day		DRILL-Int	2103	26	16,978.3	DASA previous day	1029.8	8	0.000
		D-1					D-1	1.745	1	0.187
		HCR-C					HCR-C	2.86	1	0.091

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