We also observed that individuals with increasing number of SD diagnoses had a larger effect on suicidality than that observed with respect to single SDs. The strongest associations were observed for SI (individuals with all five SD diagnoses showed a 6.77-fold increase in SI odds) and SA (individuals with all five SD diagnoses showed a 3.61-fold increase in SA odds) and relatively weaker associations were present for persistent SI (individuals with all five SD diagnoses showed a 2.01-fold increase in persistent-SI odds) and SP (individuals with all five SD diagnoses showed a 2.62-fold increase in SP odds). Our analysis in the Army STARRS participants also showed that SUDcombined is positively associated with suicidality (SI OR = 2.88; SP OR = 3.38; SA OR = 3.92).
