Results of Cox proportional hazard regression analysis on S. lateralis larval survival based on different parasitic status and developmental stages.

The table shows for each term in the design matrix the estimated coefficient (coef), the relative risk exp () (exp (coef)), the standard error, the z-value and the corresponding P-value. Each P-value provides a test for the difference of each level with respect to the baseline. The overall P-value for factors with more than two levels (i.e. stage) and for the interaction stage*infection status, is obtained through the Wald test and is shown under the table.