Comparison 5. Subgroup analysis: data publication.

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
1 Amphetamine use (UA)	7		Mean Difference (IV, Random, 95% CI)	Subtotals only
1.1 Published data	3	138	Mean Difference (IV, Random, 95% CI)	‐0.22 [‐0.83, 0.39]
1.2 Unpublished data	4	335	Mean Difference (IV, Random, 95% CI)	‐0.86 [‐3.21, 1.50]
2 Amphetamine use (hair analysis)	1		Mean Difference (IV, Random, 95% CI)	Subtotals only
2.1 Published data	0	0	Mean Difference (IV, Random, 95% CI)	0.0 [0.0, 0.0]
2.2 Unpublished data	1	22	Mean Difference (IV, Random, 95% CI)	0.53 [‐6.02, 7.08]
3 Sustained abstinence	6		Risk Ratio (M‐H, Random, 95% CI)	Subtotals only
3.1 Published data	1	73	Risk Ratio (M‐H, Random, 95% CI)	1.03 [0.49, 2.17]
3.2 Unpublished data	5	486	Risk Ratio (M‐H, Random, 95% CI)	1.13 [0.83, 1.54]
4 Self reported amphetamine use	3		Mean Difference (IV, Random, 95% CI)	Subtotals only
4.1 Published data	2	104	Mean Difference (IV, Random, 95% CI)	‐2.25 [‐7.02, 2.51]
4.2 Unpublished data	1	29	Mean Difference (IV, Random, 95% CI)	7.71 [‐5.10, 20.52]
5 Retention in treatment	11	791	Risk Ratio (M‐H, Random, 95% CI)	1.01 [0.90, 1.14]
5.1 Published data	11	791	Risk Ratio (M‐H, Random, 95% CI)	1.01 [0.90, 1.14]
5.2 Unpublished data	0	0	Risk Ratio (M‐H, Random, 95% CI)	0.0 [0.0, 0.0]
6 Amphetamine craving (at the end of study)	2		Std. Mean Difference (IV, Random, 95% CI)	Subtotals only
6.1 Published data	0	0	Std. Mean Difference (IV, Random, 95% CI)	0.0 [0.0, 0.0]
6.2 Unpublished data	2	144	Std. Mean Difference (IV, Random, 95% CI)	0.07 [‐0.44, 0.59]
7 Dropouts due to any adverse event	10		Risk Difference (M‐H, Random, 95% CI)	Subtotals only
7.1 Published data	5	292	Risk Difference (M‐H, Random, 95% CI)	0.00 [‐0.04, 0.05]
7.2 Unpublished data	5	348	Risk Difference (M‐H, Random, 95% CI)	0.01 [‐0.05, 0.07]
8 Dropouts due to cardiovascular adverse events	8		Risk Difference (M‐H, Random, 95% CI)	Subtotals only
8.1 Published data	2	103	Risk Difference (M‐H, Random, 95% CI)	0.02 [‐0.04, 0.09]
8.2 Unpublished data	6	267	Risk Difference (M‐H, Random, 95% CI)	‐0.00 [‐0.04, 0.04]
9 Dropouts due to psychiatric adverse events	7		Risk Difference (M‐H, Random, 95% CI)	Subtotals only
9.1 Published data	3	152	Risk Difference (M‐H, Random, 95% CI)	‐0.03 [‐0.08, 0.03]
9.2 Unpublished data	4	138	Risk Difference (M‐H, Random, 95% CI)	‐0.01 [‐0.07, 0.05]