Pierce reported a Suicide Intent Scale (SIS) to measure the intent of the person to commit suicide.
Parameters:
(1) isolation
(2) timing
(3) precautions against rescue
(4) acting to get help
(5) final acts in anticipation
(6) suicide note
(7) lethality
(8) stated intent
(9) premeditation
(10) reaction to act
(11) predictable outcome
(12) death without medical treatment
|
Parameter |
Finding |
Points |
|
isolation |
someone present |
0 |
|
|
someone nearby or on telephone |
1 |
|
|
no one nearby |
2 |
|
timing |
timed so intervention probable |
0 |
|
|
intervention unlikely |
1 |
|
|
intervention highly unlikely |
2 |
|
precautions against rescue |
none |
0 |
|
|
passive |
1 |
|
|
active precautions |
2 |
|
acting to get help |
notifies helper of attempt |
0 |
|
|
contacts helper, does not tell |
1 |
|
|
no contact with helper |
2 |
|
final acts in anticipation |
none |
0 |
|
|
partial preparation |
1 |
|
|
definite plans |
2 |
|
suicide note |
none |
0 |
|
|
note torn up |
1 |
|
|
present |
2 |
|
lethality |
thought would not kill |
0 |
|
|
unsure if lethal |
1 |
|
|
believed would kill |
2 |
|
stated intent |
did not want to die |
0 |
|
|
unsure |
1 |
|
|
wanted to die |
2 |
|
premeditation |
impulsive |
0 |
|
|
considered less than 1 hour |
1 |
|
|
considered less than 1 day |
2 |
|
|
considered more than 1 day |
3 |
|
reaction to act |
glad recovered |
0 |
|
|
uncertain |
1 |
|
|
sorry failed |
2 |
|
predictable outcome |
survival certain |
0 |
|
|
death unlikely |
1 |
|
|
death likely or certain |
2 |
|
death without medical treatment |
no |
0 |
|
|
uncertain |
1 |
|
|
yes |
2 |
total score =
= SUM(points for all of the parameters)
Interpretation:
• minimum score: 0
• maximum score: 25
• A score > 10 indicates high intent.
• Subscores can be calculated for: circumstances (questions 1 to 6), self-report (items 7 to 10), and medical risk (questions 11 and 12).
Specialty: Psychiatry
