I have extracted some data from different research papers which are all trying to find the same thing but they are using different methods to do this. I'm unable to combine the data to analyse it, so I'm not sure how to go about analysing it. I have to find the complement resistance of a certain type of bacteria and some papers have been measuring whether or not the bacteria is resistant or sensitive in serum or MgEGTA chelated serum. Some papers are measuring the amount of capsule and the %opsonophagocytosis, so the data is hard to combine. I really need help trying to figure out how to do data analysis. Thank you