I have a question about the webpage data after extracting each peak and running the bias test. 

First of all, are there any cases when the heterogeneity and bias tests should not be run?

How do you interpret the Q-squared statistic (as well as the SDM-Z value given along with it)? For example, how would you interpret the Q-squared statistic estimate of 10.79 and SDM-Z value of -1.11?

Thank you for any help you can give!
Susie