Jia Li, Qi Wang, Xiaochen Zhou
Diversity of purposes of use, time spent online, and depression among older Chinese Internet users
Aging & mental health
january 1 2017 eight states approved laws recreational marijuana use social impacts changes remain debate influence adolescent marijuana use key policy health issue across us examine changes adolescent marijuanause behaviors first year recreational marijuana implementation colorado analyze effect retail marijuana store proximity youth use perceptions secondary analysis healthy kids colorado survey data 40 schools surveyed recreational marijuana sales implemented 2013 student n 12240 2014 student n 11931 selfreported marijuana use ease access perceived harms compared years proximity recreational marijuana stores surveyed schools adolescent marijuana use behaviors wrongness use perceptions risk harm unchanged baseline oneyear followup perceived ease access marijuana increased 46 52 proximity recreational marijuana stores significantly associated perceived ease access marijuana conclusionsimportance first study adolescent marijuana use perceptions state retail implementation recreational marijuana little change adolescent marijuana use significant change perception ease access public health workers policymakers continue monitor changes essential evaluating impact liberalization marijuana policies