Not necessarily. Such a drastic increase could stem from increased exposure, which may or may not track with ER visits. It could also stem from media scares, which likely wouldn't track with ER visits.
Given that I traded cigarettes for vaping, any potential exposure in this household shifted from cigarette tobacco to e-cigarette liquids. Since I'm as careful with one as I was with the other, the probability of a call being made to Poison Control would not appreciably change.
Logic dictates that, yes. If one person in the country uses e-liquids, calls made would be limited. If a million do, the opportunity for something to go awry is a million times greater, all else being equal (which of course it never is).
I agree.
There can be MANY reason why the Amount of Calls can/does Increase. More people using a Product, to me, would have the Greats Effect.
But things like you mentioned can/does have an Effect.
Here's another one. How about More people doing DIY?