The age, sex, and race/ethnicity-adjusted percent reduction in urine cadmium geometric means comparing 1999–2002 and 2003–2008 with 1988–1994 were 27.8% (95% confidence interval: 22.3%, 32.9%) and 34.3% (29.9%, 38.4%), respectively (p-trend < 0.001),
The age, sex, and race/ethnicity-adjustedpercent reduction in urine cadmium geometric means comparing 1999–2002 and 2003–2008 with1988–1994 were 27.8% (95% confidence interval: 22.3%, 32.9%) and 34.3% (29.9%, 38.4%),respectively (p-trend < 0.001),