Table 3.

Predictors of suicide mortality among persons who contacted specialised gender identity units at age less than 23 years

	Model 1. Group membership, registered sex, birth year	P value	Model 2. Group membership, registered sex, birth year and contact with specialist-level psychiatric care	P value
	HR (95% CI)		HR (95% CI)
Group
Controls	Ref		Ref
Gender-referred	4.3 (1.7 to 10.7)	0.002	1.8 (0.6 to 4.8)	0.3
Registered sex male	3.0 (1.1 to 8.2)	0.04	3.8 (1.4 to 10.5)	0.01
Later birth year	0.9 (0.8 to 1.0)	0.02	0.9 (0.8 to 1.0)	0.01
Contacts to specialist-level psychiatric care	–	–		–
None			Ref
1–5			1.3 (0.2 to 10.7)	0.8
6–25			3.9 (1.0 to 16.0)	0.06
26–100			5.6 (1.5 to 21.0)	0.01
101+			11.1 (3.2 to 38.3)	<0.001

p-values statistically significant at level <0.01 are highlighted in bold