Maternal maximum drinks predicted all outcome variables net paternal status; all regression coefficients were significant when adjusted for paternal status. The reverse was not true: five effects of paternal status were not quite significant when adjusted for maternal status. Partial regression coefficients were nevertheless quite similar for the two parents, ranging from .175 to .515 (Mdn, .314) for mothers and from .110 to .544 (Mdn, .361) for fathers. Summing the partial regression coefficients associated with each parent yielded an effect that was 25% to 83% larger than the (unadjusted) effect of paternal status alone, with a median increase of 53%.
