Table 3.

Odds ratios for predictors of prospective suicidal behavior (n = 1955)

	OR	95% CI	P
SI variability model
SI score dispersion × 10a	1.21	1.05–1.40	0.01*
Age at study entry	0.98	0.96–1.00	0.02*
Gender	1.08	0.68–1.72	0.74
History of suicide attempt	2.77	1.73–4.45	< 0.01*
PDQ score	1.00	0.98–1.01	0.63
Depression severity	1.13	0.99–1.28	0.05
Depression symptom instability	1.02	0.08–13.17	0.99
Manic symptom instability	0.81	0.11–6.00	0.84
Alcohol abuse	1.52	0.83–2.79	0.17
Substance abuse	2.04	1.04–4.03	0.04*
Total number of visits	0.98	0.96–1.00	0.04*
SI intensity model
SI median score
No SI	Reference
Rare/fleeting	1.54	0.79–3.03	0.21
Several days	1.32	0.64–2.76	0.45
Nearly every day	4.81	1.99–11.60	< 0.01*
Age at study entry	0.97	0.96–0.99	0.01*
Gender	1.11	0.70–1.79	0.65
History of suicide attempt	2.79	1.73–4.50	< 0.01*
PDQ score	1.00	0.98–1.01	0.58
Depression severity	1.09	0.95–1.25	0.21
Depression symptom instability	3.34	0.25–45.28	0.37
Manic symptom instability	0.70	0.09–5.35	0.73
Alcohol abuse	1.65	0.90–3.05	0.10
Substance abuse	1.84	0.93–3.64	0.08
Total number of visits	0.98	0.96–1.00	0.03*
SI persistence model
Proportion of visits with SI × 10a	1.10	1.00–1.22	0.05
Age at study entry	0.98	0.96–1.00	0.02*
Gender	1.09	0.70–1.73	0.70
History of suicide attempt	2.79	1.75–4.43	< 0.01*
PDQ score	0.99	0.98–1.01	0.58
Depression severity	1.11	0.98–1.25	0.10
Depression symptom instability	2.53	0.26–24.5	0.42
Manic symptom instability	0.81	0.11–5.95	0.84
Alcohol abuse	1.64	0.89–3.02	0.11
Substance abuse	1.86	0.96–360	0.07
Total number of visits	0.98	0.96–0.99	0.04*

SI suicidal ideation, PDQ Personality Disorders Questionnaire

^aA one unit change corresponds to a 10% change in variable (SI score dispersion or proportion of visits with SI); * p < .05