Table 3. Standardized Intervention Effects From Intent-to-Treat and As-Treated Analyses After Treatment and at 1, 3, and 6 Months^a.

Outcome	After treatment		1 Month		3 Months		6 Months
	d (95% CI)	P value	d (95% CI)	P value	d (95% CI)	P value	d (95% CI)	P value
Intent-to-treat analysis
Suicide knowledgeb	0.15 (0.08 to 0.23)	<.001	0.16 (0.07 to 0.22)	<.001	0.12 (0.05 to 0.19)	.001	0.13 (0.06 to 0.20)	<.001
Maladaptive attitudesc	0.18 (0.14 to 0.25)	<.001	0.20 (0.12 to 0.23)	<.001	0.10 (0.05 to 0.16)	<.001	0.14 (0.09 to 0.19)	<.001
Help-seekingd	NA	NA	−0.14 (−0.30 to 0.02)	.08	0.04 (−0.11 to 0.19)	.65	0.16 (0.01 to 0.32)	.04
As-treated analysis
Suicide knowledgeb	0.23 (0.16 to 0.34)	<.001	0.25 (0.15 to 0.32)	<.001	0.16 (0.07 to 0.25)	.001	0.15 (0.07 to 0.24)	<.001
Maladaptive attitudesc	0.26 (0.20 to 0.33)	<.001	0.26 (0.20 to 0.32)	<.001	0.19 (0.13 to 0.26)	<.001	0.19 (0.12 to 0.25)	<.001
Help-seekingd	NA	NA	−0.08 (−0.27 to 0.15)	.47	−0.04 (−0.24 to 0.15)	.67	0.14 (−0.06 to 0.34)	.16

^a Positive results are in the direction of improvement. Effect size estimates control for baseline levels of the corresponding outcome (ie, 6 months vs baseline, 3 months vs baseline, 1 month vs baseline, and after treatment vs baseline).

^b Assessed by 11-item Preventing Addiction Related Suicide Suicide Knowledge Scale; scored as number of correct responses, ranging from 0 to 11; higher scores indicate more accurate suicide knowledge.

^c Agreement with maladaptive attitudes assessed by 6-item Preventing Addiction Related Suicide Attitude Scale; scoring sums responses on 5-point scale, ranging from 6 to 30; lower scores indicate less agreement with maladaptive attitudes.

^d Frequency of help-seeking for self or on behalf of others assessed by 4-item Preventing Addiction Related Suicide Help-Seeking Scale; scoring sums responses on 5-point scale, ranging from 0 to 16; higher scores indicate more help-seeking behavior.