Skip to main content
. Author manuscript; available in PMC: 2022 May 1.
Published in final edited form as: J Psychiatr Res. 2020 Oct 30;137:572–578. doi: 10.1016/j.jpsychires.2020.10.041

Table 3.

Characteristics of suicidal ideation and behavior in depressed suicide attempters with and without history of lifetime substance use disorder.

Variable History of lifetime substance use disorder (N = 135) No history of substance use disorder (N = 219) Analysis
n Mean SD n Mean SD t df P
Suicidal Ideation
Beck Scale for Suicidal Ideation (SSI) 129 16.4 11.3 193 15.7 10.3 0.597 320 0.551
Suicidal Behavior
Number of lifetime suicide attempts 135 2.7 1.7 219 2.1 1.5 3.397 352 0.001
Medical lethality of maximum- lethality attempt 135 3.3 1.9 212 2.7 2.1 2.811 345 0.005
Medical lethality of most recent attempt 133 2.6 2.0 212 2.3 2.0 1.183 343 0.238
Suicide intent during maximum- lethality suicide attempt 129 16.7 6.0 194 16.2 5.6 0.755 321 0.451
Suicide Intent during most recent attempt 129 16.1 5.9 201 16.1 5.3 0.002 328 0.998
n % N % χ2 df p
Maximum-lethality attempt was planned* 57 39.6 87 60.4 0.009 1 0.923
Most recent attempt was planned* 56 37.8 92 62.2 0.272 1 0.653
*

Participant spent more than 3 hours planning for his/her suicide attempt (assessed by item 15 on suicide intent scale)