Scatter plot of the (negative) trend line slopes k vs. the gross regional product of 1961 (in €1,000 per person per month) for the Austrian provinces, except the city of Vienna. The data indicates a strong correlation of economic wealth and overall diabetes rates. The traditionally rich provinces T, V, O, and Sa show lower rates than the poorest province of B. Vienna as the capital city does not follow the pattern—it has a much higher GRP (€2,500) than any of the other provinces; however, due to its higher fraction of poor inhabitants it maintains a high slope of , averaged over males and females (Table 1).