Skip to main content

Table 2 Comparison between Suicide Attempters and Non-Suicide Attempters Based on Items in the Suicide Behavior Questionnaire-Revised (SBQ-R)

From: Psychological characteristics of suicide attempters among undergraduate college students in China: a cross-sectional study

SBQ-R Suicide Attempt Total Statistic p-value Cohen’s d
Yes (n = 237) No (n = 1185) (n = 1422)
Past-Year Ideation Frequency
 Mean ± SD 1.81 ± 1.05 0.32 ± 0.68 0.57 ± 0.02 20.90 < 0.001a 0.75
 Median (min, max) 2 (0, 3) 0 (0, 3) 0 (0, 3) 240,548.00 < 0.001b 1.04c
Life-Time Threat (Inform Someone)
 Mean ± SD 0.63 ± 0.48 0.11 ± 0.31 0.19 ± 0.40 16.11 < 0.001a 0.34
 Median (min, max) 1 (0, 1) 0 (0, 1) 0 (0, 1) 214,248.00 < 0.001b 0.72c
Likelihood of Future Attempt
 Mean ± SD 0.50 ± 0.50 0.05 ± 0.21 0.12 ± 0.33 13.79 < 0.001a 0.28
 Median (min, max) 1 (0, 1) 0 (0, 1) 0 (0, 1) 204,531.00 < 0.001b 0.62c
  1. 1. Past-Year Ideation Frequency is derived from response to Q2; Life-Time Threat from Q3; and Likelihood of Future Attempt from Q4 of the SBQ-R. Q1 is omitted
  2. 2. aIndependent samples t-test; bMann-Whitney U test
  3. 3. ccalculation obtained from https://www.psychometrica.de/effect_size.html
  4. Ref: Cohen (1992), .00 to .19 as trivial; values .20 to .49 as small effect, values .50 to .79 as medium effect, and values ≥ .80 as a large effect