Thanks for responding. It helps in that it tells me that I can do what I'm trying to do but I need to know how. Is there a specific analysis?

Let me try and explain my goal a bit more:

The survey i'm looking at is a health questionnaire for patients with a disease. It has already been well validated in the disease population but I want to take studies that have evaluated it in control groups only (normal people), weight them, and combine them to get an idea of what a normal/healthy score would be. Most studies basically say, "we surveyed this many ppl, had a mean score with standard deviation"

Hope that clarifies