Urban HIV incidence as a function of socioeconomic and demographic metrics of 80 U.S. cities in 2000 (unless otherwise indicated).

<p>Low (Q1) and high (Q4) quartiles for each metric are shown, with their 1998–2002 HIV incidence averages. HIV association factor is the ratio between HIV incidences for Q4 and Q1, or, for starred metrics (*), Q1:Q4* (for easier comparison where a smaller metric value theoretically predicts greater risk). Boldfaced = p<0.05).