Skip to main content
. Author manuscript; available in PMC: 2022 Jul 15.
Published in final edited form as: Drug Alcohol Depend. 2019 Sep 19;204:107563. doi: 10.1016/j.drugalcdep.2019.107563

Fig. 2.

Fig. 2.

Proportion of studies by intervention type.

*Total N = 251 studies. One study (Johnson et al., 2011) appears in two intervention types.