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Insomnia as a mediator between sleep reactivity and depression. Mediated effects were estimated using the PRODCLIN method in R-Mediation.51 Both mediated effects were statistically significant at P < 0.05. a = association between the IV and the M. b = relation between the DV and M adjusted for the effects of the IV. c′ = relation between the IV and the DV adjusted for the effect of the mediator on the DV.
