Dean, I think this information looks great and I agree there is a substantial problem concerning the sanitation and hygiene practices and their underlying effects on malnutrition (via enteropathy). It's great to see this issue brought into the public eye. My only concern with the above graphs is that India represents a substantial portion of the data set with 3 prominent data points ('92,'98,'2005) and by far the largest population sizes. As a result, your regression analysis appears heavily skewed to reflect the findings of India. I am curious what these graphs would like look without India data. Just eyeballing the data, I am envisioning a pretty flat curve (limiting the overall findings). Would you be willing to supply regression excluding India? Regards, David Cisewski.