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. 2020 Apr 15;20:164. doi: 10.1186/s12888-020-02569-1

Table 4.

Individual item fit of final Optimism and Protective Self-Worth item sets across two validation samples

Location
(logits)		 Fit Residual
(z-value)		 Chi-square
P-value		 ANOVA
P-value
Item Statement Sample 0 Sample 1 Sample 0 Sample 1 Sample 0 Sample 1 Sample 0 Sample 1
Optimism 1 I do not feel lonely in my room on my own 0.135 0.308 1.773 1.831 0.086 0.143 0.094 0.163
5 If I were on remand I would not feel stressed out −0.444 − 0.54 − 0.087 − 0.869 0.417 0.274 0.326 0.137
8 I feel fine about coming into this establishment −0.279 − 0.147 0.208 − 1.224 0.232 0.450 0.177 0.234
11 If I am nervous I do not lose my appetite −0.003 0.041 0.288 0.788 0.503 0.916 0.374 0.900
14 I think that everyone likes me −0.045 0.026 1.177 0.915 0.936 0.813 0.930 0.788
18 If I worry about things I sleep OK −0.012 0.01 −0.459 0.526 0.319 0.437 0.203 0.409
19 If I were depressed I would talk to someone −0.477 −0.589 0.618 1.814 0.419 0.229 0.379 0.279
21 I do not think about how I can end my life 1.079 1.029 0.723 0.457 <.005a 0.718 <.005a 0.688
23 I can think straight when I am depressed −0.607 −0.714 1.262 0.01 0.800 0.166 0.815 0.114
24 I feel like there is hope in my life 0.653 0.576 1.617 1.148 0.605 0.992 0.736 0.999
Protective Self-Worth 2 If I had a job I would not commit crime 0.021 −0.036 0.678 2.677a 0.776 0.145 0.788 0.211
3 If I were feeling suicidal I would speak to someone −0.06 −0.089 1.143 1.83 0.275 0.966 0.278 0.973
10 When arrested I would say I was sorry −0.446 −0.515 −0.582 −1.907 0.148 <.005a 0.093 <.005a
12 If I stole money for drugs I would feel like I had let myself down 0.147 0.037 −1.652 0.14 0.034 0.544 0.009 0.611
15 The day before I was due to appear in court I would think about the future 0.109 −0.004 0.102 0.836 0.527 0.706 0.507 0.801
20 My family support me 0.522 0.706 1.566 1.57 0.325 0.148 0.335 0.121
22 If I had a fight with a prisoner I would ask to see the governor −0.901 −0.885 1.238 1.316 0.892 0.313 0.903 0.291
26 If I had a supportive family I would not kill myself 0.64 0.801 1.975 1.291 0.256 0.590 0.256 0.592
27 I always turn up in court −0.033 −0.014 0.429 −1.608 0.514 0.028 0.615 0.012

a item misfit indicated – in all cases this is inconsistent between samples