Table 1.

Core items of the SIQ, that form the “scale of the 8 critical items”

No	Item	6	5	4	3	2	1	0
3	I thought about how I would kill myself	○	○	○	○	○	○	○
4	I thought about when I would kill myself	○	○	○	○	○	○	○
5	I thought about people dying	○	○	○	○	○	○	○
7	I thought about what to write in a suicide note	○	○	○	○	○	○	○
8	I thought about writing a will	○	○	○	○	○	○	○
9	I thought about telling people I plan to kill myself	○	○	○	○	○	○	○
13	I thought about how easy it would be to end it all	○	○	○	○	○	○	○
18	I thought if I had the chance I would kill myself	○	○	○	○	○	○	○

0 = I never had this thought, 1 = I had this thought before, but not in the past month, 2 = About once a month, 3 = Couple of times a month, 4 = About once a week, 5 = Couple of times a week, 6 = Almost every day.