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Table 5 Decomposition of effects from mediation analysis for the effects of T on NliceM_std that are direct or mediated through IP

From: Parasitic sea louse infestations on wild sea trout: separating the roles of fish farms and temperature

Effect

Estimate

SE

Interpretation

Natural direct effect

-0.43

0.054***

The increase in log(NliceM) brought about by a 1 SD increase in T with IP held constant at an average T

Natural indirect effect

0.34

0.038***

The increase in log(NliceM) brought about by increasing IP by the amount that would result from a 1 SD increase in T while holding T constant at an average T

Total effect

-0.1

0.046*

The increase in log(NliceM) brought about by increasing T by 1 SD

% mediated

na

   
  1. Abbreviations: IP infestation pressure from fish farms, na not available, SE standard error, SD standard deviation, T temperature
  2. *P < 0.05, ***P < 0.001