You can't possibly extrapolate from 5 years of data to impact on life expectancy.
Increased access to prenatal care has a very clear correlation with reducing early births (and that Oregon study focused narrowly on improvements in blood pressure, cholesterol or glycated hemoglobin. Reducing infant mortality isn't in there.).
Edit: Also, how much impact do you think earlier diabetes intervention will have in a 2 year period? I can at least conceive of earlier intervention having some impact after 5 or 10 years.
Increased access to prenatal care has a very clear correlation with reducing early births (and that Oregon study focused narrowly on improvements in blood pressure, cholesterol or glycated hemoglobin. Reducing infant mortality isn't in there.).
Edit: Also, how much impact do you think earlier diabetes intervention will have in a 2 year period? I can at least conceive of earlier intervention having some impact after 5 or 10 years.