Psychometric analysis of the Self-Harm Inventory using Rasch modelling

BMC Psychiatry

Table 2 Overall Level of Item Endorsement and Theoretical Probabilities of Endorsing Self-Harm Inventory (SHI) Items for Raw Scores 5 and 11

SHI Item	Type	Location	% of Sample Endorsing Item	Theoretical Probability of Item Endorsement at Raw Score 5	Theoretical Probability of Item Endorsement at Raw Score 11
20. Self-Defeating Thoughts	Cognitive	-1.916	55	.62	.87
6. Abused Alcohol	Indirect	-1.793	55	.59	.85
4. Hit Yourself	Direct	-1.233	43	.45	.77
5. Banged Your Head	Direct	-0.892	36	.37	.70
8. Scratched Yourself	Direct	-0.776	33	.35	.68
7. Driven Recklessly	Indirect	-0.695	32	.33	.66
2. Cut	Direct	-0.686	31	.33	.66
21. Starved Yourself	Discreet	-0.414	26	.27	.60
10. Medical Situations Worse	Discreet	-0.093	21	.21	.52
12. Set Up Relationship Rejection	Interpersonal	0.000	20	.20	.49
14. Distanced From God	Interpersonal	0.086	19	.18	.47
15. Emotional Abuse Relationship	Interpersonal	0.088	19	.18	.47
19. Exercised Injury	Discreet	0.217	17	.16	.44
11. Promiscuous	Interpersonal	0.246	17	.16	.43
9. Prevent Wounds Healing	Discreet	0.265	17	.16	.43
17. Lost Job On Purpose	Interpersonal	0.337	17	.15	.41
13. Abused Medication	Discreet	0.389	16	.14	.40
18. Attempted Suicide	Suicidal	0.692	13	.11	.33
1. Overdosed	Suicidal	0.709	13	.11	.32
3. Burned	Direct	0.891	11	.09	.29
22. Abused Laxatives	Discreet	1.589	06	.05	.17
16. Sexual Abuse Relationship	Interpersonal	2.990	02	.01	.05

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