We were planning about meta analysis and when doing literature review, we came across this condition:
- Articles were accessing a certain parameter. But there is one article which is using 2 different approach, lets say approach 1 and approach 2 for measuring the single parameter
- But in other articles, they are measuring the parameter through a single approach which is different than those approach 1 and 2. Thus units of measurement are different as well.
In such condition, from what I have known, we have to use Standardized mean Difference as units are different. But real problem is in that first article with 2 different approach. How to decide which approach out of two, should I use?
Using number of approaches is an optional. Using two approaches for the same parameters would make the result more scientific for the research.
Aashish Lamichhane It would be good to have the same unit to calculate the MD(mean difference). My suggession is you should change the different parameters into one. For further information please reach out me thorugh [email protected]
Hello Aashish Lamichhane, This kind of thing often occurs in life. Can you convert the approaches to be on a comparable scale?
Deborah J Hilton
Thank you for your response. Yes, the approaches are already on a comparable scale. But I doubt is it good to include such articles with different approaches in meta analysis just by mentioning that scales are comparable? Will it be a good idea to conduct a systematic review rather than a meta analysis in such scenarios?
I'm sorry I don't know the answer. Somewhere I have a book by Paul Glasziou on systematic reviews in healthcare, but I'm not just sure where my book is at present. When we had people stay at Xmas, stuff got thrown into garbage bags and put into the spare room, so I'm not sure which garbage bag it is in. Do you want me to look for it?
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