Figure 3From: Imputation method for lifetime exposure assessment in air pollution epidemiologic studies Normal probability plots of cumulative dose from 1960 through 1995. With and without intersection dose, both with percentage of dose imputed (PDI) < = 90%, N = 2211. 95% confidence limits shown. Relative dose units: 1 unit = 1 year's average dose in 1995. Long Island Breast Cancer Study Project, 1996–1997[26].Back to article page