Tetraeffective causes, mortacauses, and vitacauses of mortality and survivorship

Abstract

Every tetraeffective cause of mortality and survivorship negatively and positively affects mortality and negatively and positively affects survivorship. There is previous evidence of tetraeffective causes of mortality and survivorship, and strong rationales suggest that every cause of mortality and survivorship is tetraeffective. Here I elucidate and explain that every tetraeffective cause of mortality and survivorship combines corresponding at least one cause-specific mortacause and at least one cause-specific vitacause; “mortacause” refers here to a cause-specific component that positively affects mortality and negatively affects survivorship, and “vitacause” refers to a cause-specific component that positively affects survivorship and negatively affects mortality. I show tetraeffective causes, mortacauses, and vitacauses in results of multivariable regression analyses of effects of age, lifespan, contemporary aggregate size, lifespan aggregate size, and historical time humans’ and medflies’ mortality and survivorship. In these analyses I specify tetraeffective causes, mortacauses, and vitacauses withsign(β1)= -sign(β2), where respective correspondingβ1andβ2denote respective first and second variable-specific regression coefficients. Thus tetraeffective causes, mortacauses, and vitacauses of mortality and survivorship are hereby defined, identified, named, recognized, elucidated, conceptualized, specified, explained, and demonstrated.