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Table 2 Item properties for the BSS-Screen and total scores

From: German Beck Scale for Suicide Ideation (BSS): psychometric properties from a representative population survey

  General Population (N = 2450) Risk group (N = 112)
Item M SD P i %a r it M SD P i %a r it
1 Wish to live 0.05 0.24 3 3.8 .78 0.68 0.71 33 53.6 0.72
2 Wish to die 0.05 0.25 3 4.2 .78 0.67 0.69 33 54.5 0.80
3 Reasons for living or dying 0.045 0.24 3 3.8 .73 0.59 0.67 29 49.1 0.76
4 Active suicide attempt 0.02 0.18 1 2.0 .70 0.53 0.64 26 44.7 0.54
5 Passive suicide attempt 0.05 0.27 3 4.3 .71 1.18 0.51 58 94.6 0.44
 BSS-Screen total score 0.22 0.98 2 3.64 2.54 36
 Number of endorsed itemsa 0.18 0.75 2.96 1.58
  1. Note. aItem was regarded as endorsed if the statement rated 1 or 2 was chosen; P i = item difficulty; r it  = item-rest correlation