West Virginia study details promising method for estimating rural intravenous drug use. A study estimates that 1,857 people injected drugs in the last six months in Cabell County, W.Va., a rural county with a population of 94,958. This estimate is based on an innovative survey technique that public health officials can now use in their own rural communities to address the opioid epidemic. Source 5q.
I do feel that in some of these drug-use cases there is actually no requirement for these people to even use them in the first place (Excluding mental issues). Some take medications or opioids as a way to fix certain situations without realizing they're misled.