Short term risk of non-fatal and fatal suicidal behaviours: the predictive validity of the Columbia-Suicide Severity Rating Scale in a Swedish adult psychiatric population with a recent episode of self-harm

Table 3 C-SSRS items, intensity score and total score as predictors of non-fatal and fatal suicide attempt during six month follow-up among adult patients presenting at psychiatric emergency services in connection with an episode of self-harm in a Swedish multicentre study 2012–2016

Item	N with score (n with outcome)	Actual attempts, non-fatal and fatal, during 6 month follow-up; unadjusted				Actual attempts, non-fatal and fatal, during 6 month follow-up; adjusted models^a
Item	N with score (n with outcome)	OR (95% CI)	p	C&S R²	N’s R²	OR (95% CI)	p	C&S R²	N’s R²
Most severe ideation	801(165)	1.2 (1.001–1.4)	0.048	0.006	0.009	1.2 (0.9–1.4)	0.06	0.051	0.079
SI Intensity score	800 (165)	1.1 (1.04–1.1)	< 0.001	0.020	0.034	1.07 (1.03–1.1)	0.001	0.059	0.093
SI Frequency	798 (165)	1.3 (1.1–1.4)	< 0.001	0.020	0.031	1.2 (1.1–1.4)	0.002	0.057	0.089
SI Duration	798 (165)	1.2 (1.1–1.4)	< 0.001	0.017	0.026	1.2 (1.03–1.3)	0.01	0.053	0.083
SI Controllability	796 (164)	1.2 (1.1–1.3)	0.002	0.013	0.020	1.1 (1.01–1.3)	0.03	0.052	0.081
SI Deterrents	796 (164)	1.1 (0.9–1.2)	0.05	0.005	0.008	1.1 (1.03–1.3)	0.02	0.054	0.084
SI Reasons	794 (162)	1.1 (0.9–1.3)	0.2	0.002	0.003	1.1 (0.9–1.3)	0.3	0.046	0.073
C-SSRS total score	802 (165)	1.08 (1.05–1.1)	< 0.001	0.033	0.052	1.08 (1.04–1.1)	< 0.001	0.049	0.077

^aAdjusted for age, sex, suicide attempt prior to index episode; C-SSRS total score adjusted for age and sex only
C-SSRS Columbia-Suicide Severity Rating Scale, SI Suicidal ideation, OR Odds ratio, CI Confidence interval, C&S Cox & Snell, N’s Nagelkerke’s

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