Table 3. Logistic Regression Analyses of BPD Criteria as Prospective Factors Associated With SA+ Over 10 Years of Follow-up, Covarying for Individually Significant Demographic and Clinical Variablesa.
Variable | No. (%) | Models BPD criteria separately | Multivariable model with all BPD criteria | ||||
---|---|---|---|---|---|---|---|
Total (n = 701) | SA+ (n = 148) | SA− (n = 553) | Wald χ2 | OR (95% CI) | Wald χ2 | OR (95% CI) | |
Anger | 302 (45.6) | 102 (68.9) | 218 (39.5) | 22.36b | 2.88 (1.86-4.47) | 1.80 | 1.44 (0.85-2.45) |
Affective instability | 362 (51.6) | 116 (78.4) | 246 (44.5) | 25.48b | 3.33 (2.09-5.32) | 3.00 | 1.64 (0.94-2.87) |
Emptiness | 292 (41.7) | 93 (62.8) | 199 (36.1) | 20.18b | 2.61 (1.72-3.98) | 4.36c | 1.63 (1.03-2.57) |
Identity disturbance | 212 (30.2) | 80 (54.1) | 132 (23.9) | 31.91b | 3.37 (2.21-5.13) | 10.59d | 2.21 (1.37-3.56) |
Dissociation/paranoid | 218 (31.1) | 79 (53.4) | 139 (25.1) | 18.31b | 2.55 (1.66-3.92) | 0.20 | 1.12 (0.68-1.86) |
Abandonment | 190 (27.1) | 69 (46.6) | 121 (21.9) | 24.28b | 2.99 (1.93-4.62) | 6.71c | 1.93 (1.17-3.16) |
Impulsivity | 318 (45.4) | 100 (67.6) | 218 (39.4) | 19.50b | 2.69 (1.73-4.17) | 3.78 | 1.67 (1.00-2.79) |
Unstable relations | 267 (38.1) | 84 (56.8) | 183 (33.1) | 11.39c | 2.10 (1.37-3.24) | 0.95 | 0.76 (0.44-1.32) |
Abbreviations: BPD, borderline personality disorder; OR, odds ratio; SA+, suicide attempt over 10 years of follow-up; SA−, no suicide attempts over follow-up.
Individually significant relevant demographic and clinical covariates include sex, education, employment, sexual abuse history, posttraumatic stress disorder, alcohol use disorder, drug use disorder, antisocial personality disorder, and obsessive-compulsive personality disorder. Recruitment site was examined as a post hoc control variable. Although suicide attempts were significantly uneven across sites (χ23 = 18.95; P <.001), controlling for site as a structural set of dummy coded variables did not change the patterns of significance in any of the models examined. Where not specified, results presented are based on model excluding self-injurious behavior criterion to minimize potential construct contamination.
P < .001.
P < .05.
P < .01.