TY  - RPRT
TI  - Zero effects in substance abuse programs. Avoiding false positives and false negatives in the evaluation of community-based programs.
AU  - D Rindskopf
AU  - L Saxe
PY  - 1998
DO  - 10.1177/0193841x9802200104
UR  - https://pubmed.ncbi.nlm.nih.gov/10183302/
ID  - 10183302
ER  -