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Table 13 Summary of the simple regression models for each of the three moderator variables on target species density

From: Evaluating the biological effectiveness of fully and partially protected marine areas

Moderator variable N oMPAs Slope [95% CI] Q M, p-val
MPA age (year) 18 0.03 [−0.02 → 0.09] QM = 1.29, p = 0.26
Size ratio (NTR:PPA) 13 −0.11 [−0.9 → 0.69] QM = 0.07, p = 0.79
# species combined 18 −0.04 [−0.14 → 0.07] QM = 0.51, p = 0.47
Sensitivity analysis; habitat confounded studies excluded
Size ratio (NTR:PPA) 11 −2.33 [−5.12 → 0.45] QM = 2.70, p = 0.1
  1. Effect sizes are weighted by the variance of the mean of several correlated variables calculated for correlation coefficients of rho = 0.5. Data under sensitivity analysis is given only for the moderator variable which showed considerable different result from when all studies were included.