Table 1.

Estimated effect of the state-wide Illinois alcohol excise tax increase on sexually transmitted infections (STIs): 2003–2011

	Δ Rate per 100 000 population per month (95% CI)	Percentage change (95% CI)
Gonorrhea	−3.2 (−4.0, −2.4)	−21.4 (−25.7 −16.7)
Chlamydia	−4.8 (−7.8, −1.9)	−11.4 (−17.8, −4.4)

Estimates are adjusted for secular trends, seasonality and median household income. Estimates include all cases of gonorrhea or chlamydia reported in Illinois regardless of race/ethnicity. Δ = Change in; CI = confidence interval.