Added research on the potential for additive or multiplicative interactions between exposures to multiple environmental agents on male reproduction is also needed.
Tests for multiplicative interactions were conducted between migraine*gender, headache frequency*gender, and migraine*headache frequency.
Multiplicative interactions between conventional risk factors and the risk scores were tested using the likelihood ratio test.
Multiplicative interactions lead to logarithmic scaling.
Additive and multiplicative interactions were examined.
This is a check for multiplicative interactions.
Additive and multiplicative interactions were tested.
Multiplicative interactions were assessed using the likelihood ratio (LR) test.
Multiplicative interactions were evaluated using the likelihood ratio test.
No significant biologically plausible multiplicative interactions were found between the variables in the final models.
We were unable to evaluate in a meaningful way multiplicative interactions, again because of power constraints.
