[mugs99]

No. I use the NSDUH (National Survey on Drug Use and Health) numbers. So does everybody.

ROTFLMAO!!!
Both NSDUH and ONDCP get their numbers from the same source...The RTI corporation, a government contractor!
.

[robertpaulsen]

For heroin use and cocaine use, the ONDCP calculates it from prisoner data and a mathematical formula.

"Office of National Drug Control Policy, Draft — What America's Users Spend on Illegal Drugs, 1988-1998, pp. 9-11. As with cocaine, estimates for the size of the hardcore heroin using population are derived from mathematical models rather than probability-based population survey estimates."

RTI International is an independent, nonprofit, 501(c)(3) corporation, commissioned by the government to actually do the survey. Nothing sinister there. I mean, if you have a source with more accurate numbers, I'd really like to see it.

If not, well, you know what to do.