Table 2.

Item Characteristics for the Screen for Nonsuicidal Self-Injury (SNSI) Questions (Dichotomous Items)

					Past Year Rate of Endorsement
					% (n)	% (n)
	Construct previously included on:				Current NSSI Disordera	No Current NSSI Disorder
Screen for Nonsuicidal Self-injury (SNSI) Items	Habit	NSSI-AT	DSHI	BNSSI-AT	(n = 41)	(n = 83)
Have you ever intentionally punched or hit walls or objects to the point of bruising or bleeding?	✓	✓		✓	78.05% (32)	15.66% (13)
Have you ever intentionally scratched yourself to the point that you bled or it left a mark?	✓	✓	✓	✓	46.34% (19)	4.82% (4)
Have you ever intentionally bitten your cheeks, lips, or other parts of your body to the point of bleeding or breaking the skin?		✓	✓	✓	41.46% (17)	6.02% (5)
Have you ever intentionally punched or hit yourself to the point of bruising or bleeding?	✓	✓	✓	✓	41.46% (17)	1.20% (1)
Have you ever intentionally stuck sharp objects (e.g., needles, pins, staples) into your skin?		✓	✓	✓	34.15% (14)	4.82% (4)
Have you ever intentionally banged your head against walls or objects to the point of bruising or bleeding?			✓		29.27% (12)	2.41% (2)
Have you ever intentionally cut yourself (e.g., on your wrists, legs, or torso)?	✓	✓	✓	✓	26.83% (11)	0.00% (0)
Have you ever intentionally prevented wounds from healing?		✓	✓	✓	24.39% (10)	4.82% (4)
Have you ever done anything else to intentionally hurt or mutilate your body on purpose that resulted in tissue damage (e.g., bruising or bleeding)?		✓	✓	✓	21.95% (9)	0.00% (0)
Have you ever intentionally burned yourself (e.g., with a lighter or cigarette)?	✓	✓	✓	✓	12.20% (5)	0.00% (0)
Have you ever intentionally rubbed your skin with glass or sandpaper until it left a mark?		✓	✓	✓	4.88% (2)	1.20% (1)
Have you ever intentionally carved words, pictures, or designs into your skin?			✓	✓	2.44% (1)	1.20% (1)
Have you ever engaged in fighting or other aggressive activities with the specific intention of getting hurt?				✓	2.44% (1)	1.20% (1)
Have you ever intentionally put bleach, cleaning supplies, or acid onto your skin for the purpose of hurting yourself?			✓	✓	0.00% (0)	0.00% (0)
Have you ever intentionally ingested (swallowed) a dangerous substance(s) or sharp object(s), such as Drano, other cleaning substances, or pins?				✓	0.00% (0)	0.00% (0)
Have you ever intentionally broken your own bones or tried to break your own bones?			✓	✓	0.00% (0)	0.00% (0)

Note: Items in bold indicate the items included in final versions of measure.

^aNSSI disorder assessed with the Clinician-Administered NSSI Disorder Index (CANDI); NSSI = nonsuicidal self-injury.