Sir.—Male sex is a well-described risk factor for death and disability due to injuries.1,2 Focusing on the preponderance of the overall risk for boys may, however, mask risks that are associated with age and/or developmental stage for injuries in general, or particular injuries. For example, Harel's analysis3 of children's injuries reported in the 1981 National Health Interview Survey4 revealed that 10-year-old
girls reported more injuries than boys, leading him to suggest a maturational effect associated with the earlier onset of puberty in girls than in boys.
Analysis of children's deaths due to burns in Michigan further highlights the importance of careful age stratification in elucidating the factors associated with burns. Death certificates were reviewed for the years 1980 through 1988 and all fire deaths (E-codes 890-924) in residents through the age of 20 years were analyzed. Conflagrations in private dwellings (E890) accounted for 592 (95%) of 626 of