Ethnic groups showed striking patterns of age-related 1-year prevalence rates of alcohol abuse and dependence (figure 1). Among the youngest males, the prevalence rate in nonblacks (23.48) was 1.9 times greater than in blacks (12.33). In the remaining age groups, the rates for non-blacks and blacks converge, with a slight predominance among nonblacks. The patterns for nonblack and black females were similar to those of males, execept the black female rate exceeded the non-black female rate among 30-to-64-year-old groups.
