In: Kypri K, Voas RB, Langley JD, Stephenson SCR, Begg DJ, Tippetts AS, and Davie GS. Minimum purchasing age for alcohol and traffic crash injuries among 15- to 19-year-olds in New Zealand. Am J Public Health. 2006;96: 126–131. doi:10.2105/AJPH.2005. 073122.
A table was missing an explanatory note. Table 1—Alcohol-Involved Crash Injuries Before and After Lowering the Minimum Purchasing Age (p128) should have contained the following text:
In the computation of incidence rates, the denominator would ideally be the number of young drivers in each age group. However, reliable estimates of these were unavailable. The New Zealand population in each age group was therefore used as the denominator. The numerator for the rates was the number of all persons (of any age) injured in a traffic crash in which a driver in the specified age group was judged by police to have been alcohol impaired.