PsycINFO strategies were derived using a 64-journal subset. To view the PsycINFO strategies, click on the relevant article category (therapy, review, qualitative).

To view the search filters for EMBASE and MEDLINE, please click on the appropriate link. To find out more about the Hedges Project, click here.

Ovid Filter

control:.tw.
OR random:.tw.
OR exp treatment

double-blind.tw.
OR random: assigned:.tw.

double-blind.tw.
OR random: asigned.tw.
OR control.tw.

Ovid Filter

risk:.tw.
OR search:.tw.
OR exp treatment

meta-analysis.tw.
OR search:.tw.

control:.tw.
OR effectiveness.tw.
OR risk:.tw.

Ovid Filter

experience:.mp.
OR interview:.tw.
OR qualitative:.tw.

qualitative:.tw.
OR themes.tw.

experiences.tw.
OR interview:.tw.
OR qualitative.tw.