Table 3.

Adjusted Cox regression model for repeat self-harm within 12 months

	Repeat self-harm (n = 19,224) a
	HR (95% CI)	p-value
Care pathways
ED discharge without referral	0.95 (0.88–1.02)	0.134
ED discharge with referral	Ref
Male (ref, female)	0.92 (0.84–1.00)	0.055
Age > 18 years (ref, < 1 8 years)	0.91 (0.83–1.00)	0.052
Method
Self-cutting only	1.45 (1.32–1.60)	< 0.001
IDO and self-cutting	1.41 (1.23–1.61)	< 0.001
Attempted hanging only	0.91 (0.77–1.08)	0.271
Attempted drowning only	0.85 (0.66–1.09)	0.196
Other	1.23 (1.10–1.37)	< 0.001
Received psychosocial assessment (ref, no)	0.95 (0.87–1.04)	0.238
Presented outside of 9 am–5 pm (ref, presented from 9am-5pm)	1.01 (0.94–1.08)	0.804
Number previous self-harm presentations (ref, none)
One	2.34 (2.15–2.55)	< 0.001
Two	3.85 (3.47–4.28)	< 0.001
Three	4.72 (4.16–5.35)	< 0.001
Four or more	9.30 (8.14–10.62)	< 0.001
Medical card holder (ref, not medical card holder)	1.23 (1.15–1.33)	< 0.001
Year of presentation (ref, 2013–2016)	0.98 (0.91–1.05)	0.512

^aAnalysis based on presentations that had complete data for all variables included in the model