Between 1989 and 1994, overweight prevalence per year overall and for each state except Arkansas, Nebraska, and Oregon changed significantly (Table 3). Most states showed a significant increase, but Arizona, California, Kansas, Maryland, Missouri, New Mexico, and ITCA showed a significant decrease. Between 1994 and 2000, overweight prevalence overall and for each state changed significantly (Table 3); except for the District of Columbia, all prevalences increased. Overweight prevalence per year overall and for each state except the District of Columbia, Hawaii, Kentucky, Louisiana, New York, Utah, and the Navajo Nation increased significantly more between 1994 and 2000 than between 1989 and 1994, showing that, in general, the increase in overweight prevalence is accelerating (eg, overall increase in prevalence per year of 0.09% ± 0% between 1989 and 1994 vs 0.40% ± 0% between 1994 and 2000). For the entire study period, overall and all state values for overweight prevalence increased significantly except for the District of Columbia, for which they significantly decreased (Table 3).