2021-2021年輕族群三四級毒品使用趨勢探討（計畫機關：衛生福利部保護服務司） 2017-2020 結合巨量資料探討台灣物質成癮者長期預後與風險研究（計畫機關：衛生福利部心理及口腔健康司） 發表：Chen WT, Wang SC, Wang IA, Tsay JH, Chen CY*. Suicide attempts and death among heroin-involved women seeking methadone treatment in Taiwan. Drug and Alcohol Dependence, 2020:217:（Cox proportional hazards model） 2016-2020 藥癮者子女醫療與社會服務之需求探討（計畫機關：國家衛生研究） 發表：Chen CY*, Wang IA, Fang SY, Huang N, Tsay JH, Chang SH. Inadequate prenatal care utilization among women with and without methadone-treated opioid use disorders in Taiwan. International Journal of Drug Policy. 2019;67: 1-8. （Generalized linear mixed model） 發表：Wang IA, Chen WT, Wang SC, Huang N, Chang SH, Chen CY. Children welfare service intervention-differences in healthcare utilization in young children in Taiwan. 2019 Society for Prevention Research 27th Annual Meeting, San Francisco, CA (poster presentation) （Generalized linear model）