TY - RPRT TI - Some methodologic issues in analyzing data from a randomized adolescent tobacco and alcohol use prevention trial. AU - Donald J Slymen AU - John P Elder AU - Alan J Litrownik AU - Guadalupe X Ayala AU - Nadia R Campbell PY - 2003 DO - 10.1016/s0895-4356(03)00012-x UR - https://pubmed.ncbi.nlm.nih.gov/12767410/ ID - 12767410 ER -