It is very uncertain whether dialectic behaviour therapy with case management changes positive drug test using urine sample at 6 months compared with a health promotion scheme (very low certainty).
It is very uncertain whether dialectic behaviour therapy with case management changes number not using marijuana at 6 months compared with a health promotion scheme (very low certainty).
It is very uncertain whether dialectic behaviour therapy with case management changes number not using crack at 6 months compared with a health promotion scheme (very low certainty).
It is very uncertain whether dialectic behaviour therapy with case management changes number not using cocaine at 6 months compared with a health promotion scheme (very low certainty).
It is very uncertain whether dialectic behaviour therapy with case management changes number not using heroin at 6 months compared with a health promotion scheme (very low certainty).
It is very uncertain whether dialectic behaviour therapy with case management changes number not using methamphetamine at 6 months compared with a health promotion scheme (very low certainty).
It is very uncertain whether dialectic behaviour therapy with case management changes self‐report of no drug use at 6 months compared with a health promotion scheme (very low certainty).