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2004 State Estimates of Substance Use
(from the 2003-2004 National Surveys on Drug Use & Health)

bulletNational data      bulletState level data       bulletMetropolitan and other subState area data

Appendix A Equation - Variance v of the estimate of the log-odds ratio, lor hat, sub s and a, is a function of three quantities, q 1, q 2, and q 3. It is expressed as the sum of q 1 and q 2 minus q 3. q 1 is the variance of the logarithm of Theta 1 hat, q 2 is the variance of the logarithm of Theta 2 hat, and q 3 is 2 times the covariance between the logarithm of Theta 1 hat and the logarithm of Theta 2 hat.

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This page was last updated on December 30, 2008.