Associations between substance type and vaginal intercourse probability by day of the week for participants who are single (panel A) or in a serious relationship (panel B).

Figure plotting primary effects reported in: Kerr, D.C.R., Washburn, I.J., Morris, M.K., Lewis, K.A.G., &amp; Tiberio, S.S. Event-level associations of marijuana and heavy alcohol use with intercourse and condom use. <em>Journal of Studies on Alcohol and Drugs</em>.