Yep. But if you look at never-nic-users, using nic results in a decrease in function.
So I'd assume it's a spectrum, with no-nic being the best, nic-no-smoke being in the middle somewhere, and smoking being the worst.
Let's hope that it approaches, is closer to the "healthy" range.
EDIT:
chart:
Hmmm It's a delta though. For the variable(s) measured.
So I'd assume it's a spectrum, with no-nic being the best, nic-no-smoke being in the middle somewhere, and smoking being the worst.
Let's hope that it approaches, is closer to the "healthy" range.
EDIT:
chart:

Hmmm It's a delta though. For the variable(s) measured.
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